运算律（专项训练）-2025-2026学年四年级下册数学人教版

人教版四年级下册数学《运算律》分类练习题1 姓名： 时间： 得分： 类型一：（连加运算，把相加得整十、整百的数用小括号括起来先求和） ①36+78+22 ②45+19+81 ③125+36+64 ④98+17+83 ⑤56+29+71 ⑥137+45+55 ⑦28+35+65 ⑧149+27+73 ⑨72+18+82 ⑩156+34+66 ①43+58+42 12128+72+39 1385+15+97 ①④102+59+41 1⑤67+32+68 1/62 16173+25+75 ⑩91+49+51 18134+46+54 人教版四年级下册数学《运算律》分类练习题2 姓名： 时间： 得分： 类型二：（连减运算，把后两个减数相加得整十、整百的数用小括号括起来先求和、最后求差） ①125-36-64 ②248-59-41 ③362-78-22 ④450-89-11 ⑤537-123-77 ⑥680-156-44 ⑦721-135-65 ⑧819-172-28 ⑨945-234-66 2162 0150-32-68 ①230-45-55 2310-76-24 1③420-143-57 ①④560-189-11 1⑤630-217-83 6740-198-2 ①850-345-55 18920-276-24 人教版四年级下册数学《运算律》分类练习题3 姓名： 时间： 得分： 类型三：（连乘运算，把相乘得整十、整百的数用小括号括起来先求积） ①25×4×12 ②125×8×3 ③2×5×17 3/62 ④25×2×8 ⑤125×4×2 ⑥5×2×23 ⑦25×8×5 ⑧125×2×4 ⑨4×25×13 ⑩8×125×7 ①5×4×19 1D2×25×18 1③125×8×5 ④25×4×9 ⑤5×8×11 4/62 162×125×6 ①25×2×14 1⑧125×8×9 人教版四年级下册数学《运算律》分类练习题4 姓名： 时间： 得分： 类型四：（连除运算，把相乘得整十、整百的数用小括号括起来先求积，最后求商） ①1200÷25÷4 ②2400÷12÷2 ③1800÷18÷5 ④3600÷4÷25 ⑤4800÷8÷125 ⑥5600÷7÷8 ⑦7200÷9÷8 ⑧9000÷25÷4 ⑨1000÷2÷5 5/62 ⑩1400÷7÷4 ①2800÷4÷25 1②3200÷16÷2 1③4000÷8÷125 ④5000÷25÷4 1⑤6300÷7÷9 168000÷10÷8 ①9600÷12÷8 1⑧12800÷16÷2 人教版四年级下册数学《运算律》分类练习题5 姓名： 时间： 得分： 类型五：（连乘运算，把一个数拆成两个数的积，其中一个数能与另外一个数相乘得整十，整百数） ①20×55 ②30×28 ③18×50 6/62 ④125×32×25 ⑤25×48×125 ⑥125×88×8 ⑦25×36 ⑧16×25 ⑨24×25 ⑩25×16×5 ①16×25×5 1②50×28×2 1315×44 1④45×12 1⑤12×35 1650×12×5 ①25×24×4 1⑧25×64×125 7/62 四下册数学《运算律》分类练习题6 姓名： 时间： 得分： 类型六：（注意：一定要括号外的数分别乘括号里的两个数，再把积相加） ①15×(3+4 ②20×(5+2) ③25×4+3 ④12×10+5) ⑤30×(6+4) ⑥18×2+3 ⑦22×3+5 ⑧14×(5+2) ⑨16×(4+6 ⑩24×5+3 ①17×2+4) 1219×(3+6 8/62 ③21×4+5 ④23×(5+4) ⑤13×6+3 1⑥27×(2+5 ⑩11×(7+3) ⑧28×(3+2 人教版四年级下册数学《运算律》分类练习题7 姓名 时间： 得分： 类型七：（①注意：两个积中相同的因数只能写一次） ①15×3+15×7 ②20×8+20×2 ③25×4+25×6 ④12×5+12×5 ⑤30×6+30×4 ⑥18×2+18×8 9/62 ⑦22×5+22×5 ⑧14×3+14×7 ⑨16×9+16×1 ⑩24×7+24×3 ①17×6+17×4 1②19×8+19×2 ③21×9+21×1 ④23×5+23×5 ⑤13×7+13×3 1627×9+27×1 ①11×8+11×2 1⑧28×6+28×4 人教版四年级下册数学《运算律》分类练习题8 姓名： 时间： 得分： 类型七：（②注意：两个积中相同的因数只能写一次） 10/62 ①85×7+85×3 ②125×9-125×1 ③45×12+45×8 ④72×15-72×5 ⑤36×8+36×2 ⑥25×14-25×4 ⑦55×6+55×4 ⑧110×7-110×3 ⑨64×9+64×1 ⑩135×4-135×2 ①99×5+99×5 12142×3-142×1 1③48×7+48×3 ①④105×8-105×4 1⑤77×6+77×4 11/62 16121×5-121×3 ①34×9+34×1 1⑧150×6-150×2 人教版四年级下册数学《运算律》分类练习题9 姓名： 时间： 得分： 类型八：（提示：把102看作100+2；81看作80+1，再用乘法分配律） ①68×102 ②79×102 ③47×101 ④62×102 ⑤125×91 ⑥25×31 ⑦45×201 ⑧45×101 ⑨84×102 12/62 ⑩42×102 ①301×34 ②103×18 1③50×61 ④125×24 1⑤25×303 1625×103 ①98×102 1⑧35×102 人教版四年级下册数学《运算律》分类练习题10 姓名： 时间： 得分： 类型九：（提示：把99看作100-1；39看作40一1，再用乘法分配律） ①23×99 ②34×98 ③45×99 13/62 ④56×98 ⑤12×99 ⑥78×98 ⑦89×99 ⑧91×99 ⑨47×98 ⑩58×99 ①69×98 1271×99 1③17×99 1④29×98 1⑤37×99 1⑥48×98 1①59×99 1⑧62×98 14/62 人教版四年级下册数学《运算律》分类练习题11 姓名： 时间： 得分： 类型十：（提示：把83看作83×1，再用乘法分配律） ①95+95×99 ②45+45×99 ③88×99+88 ④65×101-65 ⑤125×91-125 ⑥81×21-81 ⑦12+99×12 ⑧76+76×99 ⑨47+19×47 ⑩482×101-482 ①36+36×99 277×99+77 15/62 ③55×101-55 1④125×82-125 ⑤91×11-91 618+99×18 ①66+66×99 1⑧52+29×52 人教版四年级下册数学《运算律》分类练习题12 姓名： 时间： 得分： 类型十一：用除法的性质进行简便计算 ①4800÷25÷4 ②5400÷18÷5 ③7200÷36÷2 ④2800÷35÷2 ⑤9600÷24÷5 ⑥1200÷20÷3 16/62 ⑦8100÷27÷3 ⑧6400÷16÷4 ⑨4200÷21÷2 ⑩4500÷(9×5) ①5600÷7×8 23600÷(12×5 38400÷(14×6) ①④2700÷(9×6 ⑤1800÷6×5 67000÷(10×7) ①9000÷25×9 185000÷(25×4) 人教版四年级下册数学《运算律》分类练习题13 17/62 Z9/81 9I÷009I+9I÷00zE① 0E÷006-0E÷008I@ 0b÷00zI+0÷008乙① EI÷06E-EI÷08L① SZ÷00S+SZ÷00SI① 乙I÷0b忆-ZI÷0b8@ z÷08+忆÷00ZI⑥ 6I÷08E-6I÷0S6⑧ 8÷0b忆+8÷09S② s0I÷(s0I-0S0)⑨ 0L÷(0bI+00IZ)© 0÷(09-096)⑤ 0L÷(0bI+00bI© z÷(8b-0zL)⑦ 06÷(06+008I)① 意1面鳳鳅出：一+柔 徵 :回细 :去 162250÷25-750÷25 1①4200÷60+1800÷60 185400÷90-1800÷90 人教版四年级下册数学《运算律》分类练习题14 姓名： 时间： 得分： 类型十二：用积的变化规律与乘法分配律简便计算 ①2222×2223+6666×2221 ②2222×12+1111×16 ③9999×9+1111×99 ④4444×4445+8888×1857 ⑤5555×6+1111×25 ⑥4444×9+1111×4 ⑦5555×5556+1111×13335 ⑧8888×8+1111×24 ⑨3333×7+1111×37 19/62 ⑩1111×1112+3333×296 ①7777×3+1111×49 126666×4+1111×36 137777×7778+9999×5054 ④3333×3335+9999×2225 ⑤2222×2226+6666×2222 165555×5559+1111×13335 ①4444×4448+8888×1856 ⑧9999×5+1111×55 人教版四年级下册数学《运算律》分类练习题15 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①4×25×16) ②125×24 ③25×44×4 20/62 9/I L×SZ×ZE×SZI8L II×(b+0b×SZ④⑩ 9I×(SZ×S7×SZ×S7)gD L×(8+9I×ZID 86×9×SZI×SZ×S@ 6ZI×b×(sZI+S7I)D S7I×8×(SZ+SZ+SZ+SZ)① S×(8+08)×SZI① 66×ZE×SZI×SZ0① 煮1面出群二 8×9S×SZI⑥ II×9I×SZ⑧ 乙×b×SZ×8×SZI② (b×8)×(sz×SzI⑨ b×ZI×SZ© S×ZE×SZI⑤ 人教版四年级下册数学《运算律》分类练习题16 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①125×8×17) ②25×18×4 ③125×48 ④25×28×2 ⑤125×16×5 ⑥25×(4×33 ⑦125×8×25×2 ⑧25×36×11 ⑨125×72×8 二、提升题。用简便方法计算。 ⑩125×25×64×97 ①(50+50+50)×4×25 12125×24+16)×6 22/62 1③(125+125)×8×159 ①④5×25×125×128×99 1⑤125×(32+8)×9 16(25×25×25)×32 ⑩25×(80+8)×7 1⑧125×48×25×5 人教版四年级下册数学《运算律》分类练习题17 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①11×12×5 ②21×125×8 ③15×7×4 ④2×63×25 ⑤42×20×5 ⑥125×15×8×6 23/62 ⑦1000÷25÷4 ⑧540÷36 ⑨47×5×40 二、提升题。用简便方法计算。 ⑩360÷(36×2 ①104×28-28×4 12125×88 1③137×101-137 1④8×(125×9) 1⑤7400÷25÷4 16125×5×8×40 ⑩(40+4)×25 1⑧165×78+37×78-78×2 人教版四年级下册数学《运算律》分类练习题18 姓名： 时间： 得分 一、基础题。用简便方法计算。 ①125×8×14) ②25×22×4 ③125×72 24/62 ④25×44×2 ⑤125×16×4 ⑥25×(4×27 ⑦125×8×25×4 ⑧25×32×13 ⑨125×64×8 二、提升题。用简便方法计算。 ⑩125×25×32×96 ①(75+75+75)×4×25 1②125×(24+12)×8 ③(125+125)×8×129 ④5×25×125×256×95 1⑤125×48+16)×5 25/62 1⑥(25×25×25×25)×16 ①25×(60+12)×11 1⑧125×40×25×7 人教版四年级下册数学《运算律》分类练习题19 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①25×4+16 ②12×(50+3 ③15+25)×8 ④(80-8)×125 ⑤42×35+58×35 ⑥73×19+27×19 ⑦128×45-28×45 ⑧345×28-45×28 ⑨18×(100+2) 二、提升题。用简便方法计算。 ⑩42×(10+20+50 ①99×46+46 12300+120-20)×25 26162 1③198×4+198×5+198×1 ①④15×(80+4+200) 1⑤256×18+256×81+256 16101×78-78 ⑩305×6+305×3+305×1 1⑧179×27+179×72+179 人教版四年级下册数学《运算律》分类练习题20 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①24×5+10 ②35×20+4 ③37×28+63×28 ④16+24×5 ⑤156×34-56×34 ⑥90-9×10 27162 ⑦58×12+42×12 ⑧12×(100+5) ⑨217×45-17×45 二、提升题。用简便方法计算。 ⑩28×(10+30+100 ①(150+90-30)×12 12189×3+189×5+189×2 1③325×19+325×80+325 1498×56+56 1⑤102×89-89 ⑥18×60+8+150 ⑩258×7+258×2+258×1 1⑧199×36+199×63+199 人教版四年级下册数学《运算律》分类练习题21 28/62 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①35×101 ②502×12 ③708×25 ④96×38 ⑤89×42 ⑥42×99+42 ⑦15×98+15×2 ⑧135×101-135 ⑨68×102 二、提升题。用简便方法计算。 ⑩99×998 ①36×127+36×72-36 1248×76+25×48-48 1③85×102-170 ④198×76 1⑤57×99+57+57×2 29/62 1688×101-88 1①72×999 1829×157+29×44-29 人教版四年级下册数学《运算律》分类练习题22 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①34×102 ②702×15 ③906×20 ④94×25 ⑤78×45 ⑥56×99+56 ⑦22×98+22×2 ⑧158×101-158 ⑨45×103 30/62 二、提升题。用简便方法计算。 ⑩97×999 1①52×136+52×63-52 237×89+38×37-37 ③93×102-186 ①④199×68 ⑤43×99+43+43×2 1677×101-77 1①89×999 1⑧34×125+34×74-34 人教版四年级下册数学《运算律》分类练习题23 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①36×101 ②501×14 ③705×20 31/62 ④92×25 ⑤68×55 ⑥48×99+48 ⑦18×98+18×2 ⑧145×101-145 ⑨55×102 二、提升题。用简便方法计算。 096×999 ①58×127+58×72-58 1242×89+43×42-42 1③89×102-178 1④198×72 1⑤39×99+39+39×2 1666×101-66 ①79×999 1⑧28×135+28×64-28 32/62 人教版四年级下册数学《运算律》分类练习题24 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①25×(20+8)×12 ②(125+125+125+125)×4×1： ③125×(500+55) ④56×89+44×89-890 ⑤35×98+70 ⑥1111×36+9999×4 ⑦560×25+280×50 ⑧9×123-9×13+108×9 ⑨25×(40+5)×8 二、提升题。用简便方法计算。 ⑩999×997+1994 1①234×1999-233×2000 1245×56+90×22 33/62 1③78×98-80 ④125×80+16)×8 ⑤48×76+51×76+76 16333×666+999×111 ①12×178-12×12+12×44 1⑧67×999+68 人教版四年级下册数学《运算律》分类练习题25 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①15×20+8)×4 ②(125+125+125)×5×16 ③125×400+88) ④45×76+55×76-760 ⑤25×98+50 ⑥1111×18+9999×2 ⑦480×15+240×30 ⑧8×135-8×25+110×8 ⑨25×(50+4)×6 34/62 二、提升题。用简便方法计算。 ⑩999×996+1992 ①123×1998-122×1999 1②36×45+72×27 1③65×97-67 ④125×(80+24)×4 1⑤36×89+63×89+89 16222×777+666×111 ⑩15×148-15×18+15×70 1⑧56×999+57 人教版四年级下册数学《运算律》分类练习题26 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①4800÷25÷4 ②3600÷12÷3 ③5400÷18÷5 35/62 919e ￡÷8b÷00ttID 9÷EI÷008L① (6×S7)÷0006④ (9×I÷00b8① 9÷SZ÷00SI① 8÷9I÷008Z1① 真承侧出蹈任浒二 (L×6)÷009⑥ S÷忆÷0096⑧ Z÷SE÷008z② (9×ZI)÷00zL⑨ (s×6)÷00Sh© (8×L)÷009S⑤ ⑥10500÷(15×7) ①12600÷(18×7 1⑧5000÷25÷4 人教版四年级下册数学《运算律》分类练习题27 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①2400÷12÷2 ②4200÷21÷2 ③5000÷25÷4 ④7200÷(8×9 ⑤4800÷(16×3 ⑥3200÷16÷5 ⑦6400÷8×10) ⑧9000÷30÷3 ⑨2800÷4×7 二、提升题。用简便方法计算。 ⑩10800÷18÷6 ①14000÷25÷8 1②8100÷(27×3) 37162 1③12000÷(24×5 ④7500÷15÷5 ⑤16000÷32÷5 1610000÷(20×5 ①12600÷(14×9 1⑧15000÷25÷6 人教版四年级下册数学《运算律》分类练习题28 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①(800+160÷8 ②720-36÷12 ③900+45)÷15 ④480÷6+300÷6 ⑤750÷15-300÷15 ⑥560÷8+240÷8 38/62 ⑦1200+240)÷24 ⑧630-42)÷21 ⑨960÷12+360÷12 二、提升题。用简便方法计算。 ⑩(1500+300)÷30 ①(1080-72)÷36 121200÷25+800÷25 1③1400÷35-700÷35 ①④(2400+480)÷48 ⑤1800÷45+900÷45 16(3600-180÷18 ①2250÷15+1500÷15 184200+560)÷56 人教版四年级下册数学《运算律》分类练习题29 39/62 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①125×3+125×5+125×2 ②34×25-12×25+8×25 ③98×12+98×18-98×10 ④56×15+56×25+56×60 ⑤42×36-15×36+73×36 ⑥75×24+75×36-75×10 ⑦132×17+132×23+132×60 ⑧63×45-21×45+58×45 ⑨150×28+150×32-150×20 二、提升题。用简便方法计算。 ⑩258×12+258×38+258×50 ①147×34-52×34+105×34 12327×25+327×45-327×10 1③418×19+418×21+418×60①④536×28-178×28+642×28 1⑤675×16+675×24-675×10 40/62 ⑥729×33+729×47+729×20⑩846×42-253×42+407×4218915×22+915×38-915×10 人教版四年级下册数学《运算律》分类练习题30 姓名： 时间： 得分： 一、基础题。用简便方法计算。 ①135×4+135×5+135×1 ②28×12-14×12+8×12 ③85×18+85×22-85×10 ④44×25+44×35+44×40 ⑤56×16-21×16+65×16 ⑥120×32+120×28-120×20 ⑦99×14+99×36+99×50 ⑧72×27-36×27+64×27 ⑨150×18+150×22+150×60 41/62 二、提升题。用简便方法计算。 10256×15+256×25+256×60 ①143×28-57×28+114×28 2321×30+321×40-321×10 1③438×12+438×28+438×60①④512×35-178×35+666×35 1⑤670×22+670×38-670×10 16789×19+789×31+789×50①840×42-250×42+410×42⑧935×24+935×36-935×10 人教版四年级下册数学《运算律》参考答案 人教版四年级下册数学《运算 =125+(36+64) ⑥137+45+55 律》分类练习题1答案 =125+100 =137+45+55 ①36+78+22 =225 =137+100 =36+78+22) ④98+17+83 =237 =36+100 =98+17+83 ⑦28+35+65 =136 =98+100 =28+(35+65) ②45+19+81 =198 =28+100 =45+19+81 ⑤56+29+71 =128 =45+100 =56+29+71 ⑧149+27+73 =145 =56+100 ③125+36+64 =156 42/62 =149+27+73 =134+46+54 ⑩150-32-68 =149+100 =134+100 =150-（32+68 =249 =234 =150-100 ⑨72+18+82 -50 人教版四年级下册数学《运算 =72+18+82 ①230-45-55 律》分类练习题2答案 =72+100 =230-45+55 =172 ①125-36-64 =230-100 ⑩156+34+66 =125-（36+64) =130 =156+34+66 =125-100 12310-76-24 =25 =156+100 =310-76+24 ②248-59-41 =256 =310-100 ①43+58+42 =248-59+41 =210 =248-100 1③420-143-57 =43+58+42) =148 =420-(143+57) =43+100 ③362-78-22 =143 =420-200 1@128+72+39 =362-（78+22 =220 =362-100 ④560-189-11 =(128+72)+39 =262 =560-189+11 =200+39 ④450-89-11 =239 =560-200 1③85+15+97 =450-(89+11 =360 =450-100 1⑤630-217-83 =(85+15)+97 =350 =630-217+83) =100+97 ⑤537-123-77 =630-300 =197 =537-123+77) =330 @102+59+41 =537-200 16740-198-2 =102+(59+41 =337 =740-198+2) =102+100 ⑥680-156-44 =740-200 =202 =680-156+44 =540 ⑤67+32+68 =680-200 D850-345-55 =67+(32+68 =480 =850-345+55 =67+100 ⑦721-135-65 =850-400 =167 =721-135+65 =450 1⑥173+25+75 =721-200 1©920-276-24 =173+25+75 =521 =920-（276+24 =173+100 ⑧819-172-28 =920-300 =273 =819-(172+28) =620 ⑩91+49+51 =819-200 =91+(49+51 =619 人教版四年级下册数学《运算 =91+100 ⑨945-234-66 律》分类练习题3答案 =191 =945-234+66 1⑧134+46+54 =945-300 =645 43/62 9/帅 bZ÷00b忆= 00L= (乙×ZI÷00bZ= ZE÷00ZE= 乙÷乙I÷00b忆⑦ 000L= (Z×9I÷00ZE= 7I= L×000I= 乙÷9I÷00ZE① 00I÷00zI= L×(sZI×8)= 8z= (b×S7)÷00zI= L×SZI×8⑩ 00I÷008乙= b÷S乙÷00ZI① 00EI= (S7×b÷008z= EI×00I= 嵩易五圆长莱华《载 SZ÷b÷008Z① 熹》点豫出↓源由d纠裤Y EI×(SZ×b)= 05= EI×SZ×b⑥ 8Z÷00bI= 0006= 000I= (b×L)÷00bI= 6×000I= 8×SZI= b÷L÷00bI① 6×(8×SZI= (b×Z)xSZI= 00I= 6×8×SZI8① b×Z×SZI⑧ 0I÷000L= 00L= 000I= (S×乙)÷000I= bI×0S= S×00Z= S÷乙÷000I⑥ I×(乙×Sz)= s×(8×sz)= 06= I×Z×SZ④ S×8×SZ② 00I÷0006= 00SI= 0E乙= (b×S7)÷0006= 9×0SZ= E乙×0L= b÷SZ÷0006⑧ 9×(SZI×Z)= 7×(Z×S)= 00L= 9×SZI×Z⑨D EZ×Z×S⑨ 乙L÷00ZL= 0地= 000I= (8×6)÷007L= II×0b= 8×SZI= 8÷6÷00ZL② II×(8×s)= 乙×b)xSZI= 00I= II×8×S① 乙×b×SZI⑨ 9S÷009S= 006= 00b= (8×L÷009S= 6×00I= 乙×00Z= 8÷L÷009S⑨ 6×(b×S7)= 乙×(8×S7)= 8b= 6×b×S7@ 8×Z×SZ① 000I÷008ヤ= 000s= OLI= (s7I×8÷008b= S×000L= LI×0I= SZI÷8÷008b© S×(8×SZI= LIx(s×Z)= 9E= S×8×SZI① LI×S×Z© 00I÷009E= 006= 000E= (s7×b÷009E= 8I×0S= ￡×000L= S乙÷b÷009E① 8I×(S7×乙)= E×(8×SZI)= 0Z= 8I×SZ×Z⑦① E×8×SZI⑦ 06÷008I= 08E= 00Z1= (S×8I÷008I= 6I×0Z= ZI×00I= S÷8I÷008I© 6I×(b×S)= ZI×(b×SZ)= 00I= 6I×b×S① ZI×b×SZ① 1③4000÷8÷125 =900 ②50×28×2 =4000÷(8×125 ④125×32×25 =50×2×28 =4000÷1000 =125×8×4)×25 =50×2)×28 =4 =125×8)×4×25) =100×28 ①④5000÷25÷4 =1000×100 =2800 =5000÷(25×4 =100000 1315×44 =5000÷100 ⑤25×48×125 =15×4×11 =50 =25×6×8)×125 =(15×4)×11 ⑤6300÷7÷9 =25×6)×8×125 =60×11 =6300÷7×9 =660 =150×1000 =6300÷63 =150000 ①④45×12 =100 ⑥125×88×8 =45×2×6) 168000÷10÷8 =125×8×88 =45×2)×6 =8000÷10×8 =(125×8)×88 =90×6 =8000÷80 =1000×88 =540 =100 =88000 1⑤12×35 ⑩9600÷12÷8 ⑦25×36 =6×2×35 =9600÷12×8 =25×4×9) =6×2×35 =9600÷96 =(25×4)×9 =6×70 =100 1812800÷16÷2 =100×9 =420 =900 ⑥50×12×5 =12800÷16×2) ⑧16×25 =50×5×12 =12800÷32 =4×4×25 =50×5×12 =400 =4×(4×25) =250×12 人教版四年级下册数学《运算 =4×100 三3000 ①25×24×4 律》分类练习题5答案 =400 =25×4×24 ①20×55 ⑨24×25 =6×4×25 =（25×4)×24 =20×(5×11) =6×4×25) =100×24 =20×5)×11 =6×100 =2400 =100×11 =600 1⑧25×64×125 =1100 ⑩25×16×5 =25×8×8)×125 ②30×28 =25×4×4)×5 =(25×8)×(8×125) =30×(4×7) =25×4)×4×5】 =200×1000 =30×4)×7 =100×20 =200000 =120×7 =2000 =840 人教版四年级下册数学《运算 ①16×25×5 ③18×50 律》分类练习题6答案 =4×4×25×5 =9×2×50 =4×25)×4×5 ①15×3+4) =9×2×50 =100×20 =15×3+15×4 =9×100 =2000 =45+60 45/62 =105 1219×3+6 =250 ②20×5+2) =19×3+19×6 ④12×5+12×5 =20×5+20×2 =57+114 =12×5+5) =100+40 =171 =12×10 =140 1③21×4+5) =120 ③25×4+3 =21×4+21×5 ⑤30×6+30×4 =25×4+25×3 =84+105 =30×6+4) =100+75 =189 =30×10 =175 ④23×(5+4 =300 ④12×10+5) =23×5+23×4 ⑥18×2+18×8 =12×10+12×5 =115+92 =18×2+8 =120+60 =207 =18×10 =180 1⑤13×(6+3) =180 ⑤30×6+4) =13×6+13×3 ⑦22×5+22×5 =30×6+30×4 =78+39 =22×5+5) =180+120 =117 =22×10 =300 1627×2+5) =220 ⑥18×2+3) =27×2+27×5 ⑧14×3+14×7 =18×2+18×3 =54+135 =14×(3+7 =36+54 =189 =14×10 =90 ①11×7+3 =140 ⑦22×(3+5 =11×7+11×3 ⑨16×9+16×1 =22×3+22×5 =77+33 =16×(9+1 =66+110 =110 =16×10 =176 1⑧28×3+2) =160 ⑧14×5+2) =28×3+28×2 ⑩24×7+24×3 =14×5+14×2 =84+56 =24×7+3 =70+28 =140 =24×10 =98 =240 ⑨16×4+6) 人教版四年级下册数学《运算 ①17×6+17×4 律》分类练习题7答案 =16×4+16×6 =17×(6+4 =64+96 ①15×3+15×7 =17×10 =160 =15×(3+7) =170 ⑩24×5+3) =15×10 219×8+19×2 =24×5+24×3 =150 =19×(8+2 =120+72 ②20×8+20×2 =19×10 =192 =20×8+2) =190 ①17×2+4) =20×10 ③21×9+21×1 =17×2+17×4 =200 =21×9+1) =34+68 ③25×4+25×6 =21×10 =102 =25×4+6 =210 =25×10 46/62 1④23×5+23×5 ⑤36×8+36×2 ⑤77×6+77×4 =23×5+5 =36×8+2 =77×6+4 =23×10 =36×10 =77×10 =230 =360 =770 1⑤13×7+13×3 ⑥25×14-25×4 16121×5-121×3 =13×7+3 =25×(14-4) =121×5-3 =13×10 =25×10 =121×2 =130 =250 =242 1627×9+27×1 ⑦55×6+55×4 ①34×9+34×1 =27×(9+1 =55×6+4】 =34×9+1 =27×10 =55×10 =34×10 =270 =550 =340 ①11×8+11×2 ⑧110×7-110×3 1⑧150×6-150×2 =11×8+2) =110×7-3) =150×(6-2) =11×10 =110×4 =150×4 =110 =440 =600 ⑧28×6+28×4 ⑨64×9+64×1 人教版四年级下册数学《运算 =28×(6+4) =64×9+1 律》分类练习题9答案 =28×10 =64×10 =280 =640 ①68×102 0135×4-135×2 =68×100+2) 人教版四年级下册数学《运算 =135×4-2 =68×100+68×2 律》分类练习题8答案 =6800+136 =135×2 ①85×7+85×3 =270 =6936 =85×7+3 ①99×5+99×5 ②79×102 =85×10 =99×5+5) =79×100+2) =850 =79×100+79×2 =99×10 ②125×9-125×1 =7900+158 =990 =125×(9-1 12142×3-142×1 =8058 ③47×101 =125×8 =142×3-1 =1000 =47×100+1 =142×2 ③45×12+45×8 =284 =47×100+47×1 =45×12+8) 1③48×7+48×3 =4700+47 =4747 =45×20 =48×7+3 ④62×102 =900 =48×10 ④72×15-72×5 =62×100+2) =480 =72×15-5】 ④105×8-105×4 =62×100+62×2 =6200+124 =72×10 =105×8-4) =6324 =720 =105×4 ⑤125×91 =420 =125×(90+1 =125×90+125×1 47/62 =11250+125 ④125×24 ④56×98 =11375 =125×20+4 =56×100-2) ⑥25×31 =125×20+125×4=2500+500 =56×100-56×2 =25×30+1 =3000 =5600-112 =25×30+25×1 ⑤25×303 =5488 =750+25 =25×(300+3) ⑤12×99 =775 =25×300+25×3 =12×(100-1 ⑦45×201 =7500+75 =12×100-12×1 =45×200+1) =7575 =1200-12 =45×200+45×1 ⑥25×103 =1188 =9000+45 =25×100+3 ⑥78×98 =9045 =25×100+25×3 =78×(100-2 ⑧45×101 =2500+75 =78×100-78×2 =45×(100+1 =2575 =7800-156 =45×100+45×1 ①98×102 =7644 =4500+45 =(100-2×102 ⑦89×99 =4545 =100×102-2×102 =89×100-1 ⑨84×102 =10200-204 =89×100-89×1 =84×100+2) =9996 =8900-89 =84×100+84×2 1⑧35×102 =8811 =8400+168 =35×100+2 ⑧91×99 =8568 =35×100+35×2 =91×(100-1 ⑩42×102 =3500+70 =91×100-91×1 =42×100+2) =3570 =9100-91 =42×100+42×2 =9009 =4200+84 人教版四年级下册数学《运算 ⑨47×98 =4284 律》分类练习题10答案 =47×100-2) ①301×34 ①23×99 =47×100-47×2 =(300+1×34 =23×(100-1) =4700-94 =300×34+1×34 =23×100-23×1 =4606 =10200+34 =2300-23 ⑩58×99 =10234 =2277 =58×100-1 ②103×18 ②34×98 =58×100-58×1 =(100+3)×18 =34×(100-2) =5800-58 =100×18+3×18 =34×100-34×2 =5742 =1800+54 =3400-68 1①69×98 =1854 =3332 =69×100-2) 1③50×61 ③45×99 =69×100-69×2 =50×(60+1 =45×(100-1 =6900-138 =50×60+50×1 =45×100-45×1 =6762 =3000+50 =4500-45 =3050 =4455 48/62 1②71×99 =9500 ⑩482×101-482 =71×100-1 ②45+45×99 =482×101-482×1 =71×100-71×1 =45×1+45×99 =482×(101-1) =7100-71 =45×1+99) =482×100 =7029 =45×100 =48200 1③17×99 =4500 1①36+36×99 =17×100-1 388×99+88 =36×1+36×99 =17×100-17×1 =88×99+88×1 =36×1+99) =1700-17 =88×(99+1 =36×100 =1683 =88×100 =3600 ④29×98 =8800 1277×99+77 =29×100-2 ④65×101-65 =77×99+77×1 =29×100-29×2 =65×101-65×1 =77×99+1 =2900-58 =65×(101-1 =77×100 =2842 =65×100 =7700 ⑤37×99 =6500 1③55×101-55 =37×(100-1) ⑤125×91-125 =55×101-55×1 =37×100-37×1 =125×91-125×1 =55×(101-1) =3700-37 =125×91-1 =55×100 =3663 =125×90 =5500 1648×98 =11250 ①④125×82-125 =48×100-2) ⑥81×21-81 =125×82-125×1 =48×100-48×2 =81×21-81×1 =125×82-1 =4800-96 =81×21-1 =125×81 =4704 =81×20 =10125 1①59×99 =1620 ⑤91×11-91 =59×100-1) ⑦12+99×12 =91×11-91×1 =59×100-59×1 =12×1+99×12 =91×(11-1 =5900-59 =12×1+99) =91×10 =5841 =12×100 =910 1⑧62×98 =1200 1⑥18+99×18 =62×100-2) ⑧76+76×99 =18×1+99×18 =62×100-62×2 =76×1+76×99 =18×1+99 =6200-124 =76×(1+99 =18×100 =6076 =76×100 =1800 =7600 ①66±66x99 人教版四年级下册数学《运算 ⑨47+19×47 =66×1+66×99 律》分类练习题11答案 =47×1+19×47 =66×1+99) ①95+95×99 =47×1+19) =66×100 =95×1+95×99 =47×20 =6600 =95×1+99) =940 =95×100 49/62 1⑧52+29×52 ⑨4200÷21÷2 人教版四年级下册数学《运算 =52×1+29×52 =4200÷(21×2) 律》分类练习题13答案 =52×1+29 =4200÷42 ①(1800+90)÷90 =52×30 =100 =1800÷90+90÷90 =1560 ⑩4500÷(9×5) =20+1 人教版四年级下册数学《运算 =4500÷9÷5 =2计 律》分类练习题12答案 =500÷5 ②(720-48)÷24 =100 =720÷24-48÷24 ①4800÷25÷4 ①5600÷7×8) =30-2 =4800÷25×4) =5600÷7÷8 =28 =4800÷100 =800÷8 ③(1400+140÷70 =48 =100 =1400÷70+140÷70 ②5400÷18÷5 23600÷(12×5 =20+2 =5400÷18×5 =3600÷12÷5 =22 =5400÷90 =300÷5 ④(960-60)÷30 =60 =60 =960÷30-60÷30 ③7200÷36÷2 1③8400÷(14×6 =32-2 =7200÷36×2 =8400÷14÷6 =30 =7200÷72 =600÷6 ⑤(2100+140)÷70 =100 =100 =2100÷70+140÷70 ④2800÷35÷2 1④2700÷(9×6 =30+2 =2800÷35×2 =2700÷9÷6 =32 =2800÷70 =300÷6 ⑥(1050-105)÷105 =40 =50 =1050÷105-105÷105 ⑤9600÷24÷5 ⑤1800÷6×5 =10-1 =9600÷24×5 =1800÷6÷5 =9 =9600÷120 =300÷5 ⑦560÷8+240÷8 =80 =60 =560+240)÷8 ⑥1200÷20÷3 67000÷(10×7) =800÷8 =1200÷(20×3 =7000÷10÷7 =100 =1200÷60 =700÷7 ⑧950÷19-380÷19 =20 =100 =（950-380÷19 ⑦8100÷27÷3 ①9000÷25×9 =570÷19 =8100÷27×3 =9000÷25÷9 =30 =8100÷81 =360÷9 ⑨1200÷24+480÷24 =100 =40 =(1200+480)÷24 ⑧6400÷16÷4 85000÷25×4 =1680÷24 =6400÷(16×4) =5000÷25÷4 =70 =6400÷64 =200÷4 0840÷12-240÷12 =100 =50 =840-240÷12 三600÷12 =50 50/62 ①1500÷25+500÷25 ②2222×12+1111×16 ⑩1111×1112+3333×296 =(1500+500)÷25 =1111×2×12+1111×16 =1111×1112+1111×3×296 =2000÷25 =1111×(24+16 =1111×1112+888) =80 =1111×40 =1111×2000 12780÷13-390÷13 =44440 =2222000 =780-390)÷13 ③9999×9+1111×99 ①7777×3+1111×49 =390÷13 =1111×9×9+1111×99 =1111×7×3+1111×49 =30 =1111×81+99 =1111×21+49 1③2800÷40+1200÷40 =1111×180 =1111×70 =(2800+1200)÷40 =199980 =77770 ④4444×4445+8888×1857 126666×4+1111×36 =4000÷40 =100 =4444×4445+4444×2×1857 =1111×6×4+1111×36 ④1800÷30-900÷30 =4444×4445+3714 =1111×24+36 =(1800-900)÷30 =4444×8159 =1111×60 =36258596 =66660 =900÷30 ⑤5555×6+1111×25 1③7777×7778+9999×5054 =30 ⑤3200÷16+1600÷16 =1111×5×6+1111×25 =1111×7×7778+1111×9×5054 =(3200+1600)÷16 =1111×30+25) =1111×(54446+45486) =1111×55 =1111×99932 =4800÷16 =61105 =111024452 =300 ⑥4444×9+1111×4 1④3333×3335+9999×2225 162250÷25-750÷25 =1111×4×9+1111×4 =3333×3335+3333×3×2225 =2250-750)÷25 =1111×36+4) =3333×3335+6675) =1500÷25 =1111×40 =3333×10010 =60 1⑩4200÷60+1800÷60 =44440 =33363330 ⑦5555×5556+1111×13335 1⑤2222×2226+6666×2222 =4200+1800)÷60 =1111×5×5556+1111×13335 =2222×2226+2222×3×2222 =6000÷60 =1111×27780+13335 =2222×2226+6666 =100 =2222×8892 1⑧5400÷90-1800÷90 =1111×41115 =45678765 =19768024 =(5400-1800)÷90 ⑧8888×8+1111×24 165555×5559+1111×13335 =3600÷90 =1111×8×8+1111×24 =1111×5×5559+1111×13335 =40 =1111×(64+24 =1111×(27795+13335 人教版四年级下册数学《运算 =1111×88 =1111×41130 律》分类练习题14答案 =97768 =45695430 ⑨3333×7+1111×37 1⑦4444×4448+8888×1856 ①2222×2223+6666×2221 =1111×3×7+1111×37 =4444×4448+4444×2×1856 =2222×2223+2222×3×2221 =1111×21+37 =4444×4448+3712 =2222×2223+6663) =1111×58 =4444×8160 =2222×8886 =64438 =36263040 =19744692 51/62 189999×5+1111×55 =4400 ①25×40+4)×11 =1111×9×5+1111×55 ⑨125×56×8 =（25×40+25×4)×11 =1111×45+55 =(125×8)×56 =(1000+100)×11 =1111×100 =1000×56 =111100 =56000 =1100×11 二、提升题 =12100 人教版四年级下册数学《运算 ⑩25×125×32×99 1⑧125×32×25×7 律》分类练习题15答案 =25×125×4×8×99 =125×8×4×25×7 一、 基础题 =25×4×125×8)×99 =(125×8)×4×25)×7 ①4×25×16 =100×1000×99 =1000×100×7 =9900000 =700000 =(4×25)×16 =100×16 1①125×80+8)×5 人教版四年级下册数学《运算 =1600 =(125×80+125×8)×5 律》分类练习题16答案 ②125×24 =10000+1000)×5 一、 基础题 =125×8×3 =11000×5 ①125×(8×17) =1000×3 =55000 =3000 =(125×8)×17 ③25×44×4 1②（25+25+25+25)×8×125 =1000×17 =25×4)×44 =25×4×8×125 =17000 =100×44 =100×1000 ②25×18×4 =4400 =100000 =25×4×18 ④125×32×5 ③(125+125)×4×129 =100×18 =125×8×4×5 =125×2×4×129 =1800 =(125×8)×4×5 =125×8)×129 ③125×48 =1000×20 =125×8×6 =1000×129 =20000 =1000×6 =129000 ⑤25×12×4 =6000 ④5×25×125×64×98 ④25×28×2 =(25×4)×12 =5×25×125×2×4×8×98 =（25×2)×28 =100×12 =5×2)×25×4×(125×8)×98 =1200 =50×28 =10×100×1000×98 ⑥(125×25×8×4 =1400 =98000000 ⑤125×16×5 =(125×8)×25×4 1⑤125×(16+8)×7 =125×8×2×5 =1000×100 =(125×16+125×8)×7 =125×8)×2×5 =100000 =2000+1000)×7 =1000×10 ⑦125×8×25×4×2 =3000×7 =10000 =(125×8)×25×4)×2 =21000 ⑥25×4×33 =1000×100×2 16(25×25×25×25)×16 =（25×4)×33 =200000 ⑧25×16×11 =25×2)×25×2)×(25×2)×(25×2H100×33 =25×4×4×11 =3300 =25×4)×4×11 =50×50×50×50 =6250000 =100×44 52/62 ⑦125×8×25×2 1⑥25×25×25)×32 ⑥125×15×8×6 =(125×8)×25×2 =25×25×25×4×8 =(125×8)×(15×6 =1000×50=50000 =25×4×25×8)×25 =1000×90 ⑧25×36×11 =90000 =100×200×25 =25×4×9×11 =500000 ⑦1000÷25÷4 =(25×4)×9×11 ①25×(80+8)×7 =1000÷25×4 =100×99 =1000÷100 =25×80+25×8)×7 =9900 =10 ⑨125×72×8 =2000+200)×7 ⑧540÷36 =(125×8)×72 =2200×7 =540÷(9×4 =15400 =1000×72 18125×48×25×5 =540÷9÷4 =72000 =60÷4 二、提升题 =125×8×6×25×5 =15 ⑩125×25×64×97 =125×8)×25×6)×5 947×5×40 =125×25×8×8×97 =1000×150×5 =750000 =47×(5×40) =(125×8)×25×8)×97 =47×200 =1000×200×97 人教版四年级下册数学《运算 =9400 =19400000 律》分类练习题17答案 ①(50+50+50)×4×25 二、提升题 一、基础题 ⑩360÷36×2) =50×3×4×25 ①11×12×5 =360÷36÷2 =150×100 =11×12×5 =10÷2 =15000 =11×60 =5 1②125×24+16×6 =660 ①104×28-28×4 =125×40×6 ②21×125×8 =5000×6 =28×(104-4 =21×125×8) =30000 =28×100 =21×1000 =2800 ③(125+125)×8×159 =21000 =125×2×8×159 ②125×88 =(125×8)×2×159) ③15×7×4 =125×(80+8 =15×4×7 =1000×318 =125×80+125×8 =318000 =60×7 =10000+1000 ①④5×25×125×128×99 =420 =11000 =5×25×125×2×4×16×99 ④2×63×25 ③137×101-137 =5×2)×25×4)×(125×16)×99 =（2×25×63 =137×(101-1 =10×100×2000×99 =50×63 =137×100 =198000000 =3150 =13700 ⑤125×32+8)×9 ⑤42×20×5 ④8×(125×9 =125×40×9 =42×(20×5 =5000×9 =42×100 =(8×125)×9 =45000 =4200 =1000×9 =9000 53/62 ⑤7400÷25÷4 ⑥25×4×27 ⑤125×48+16)×5 =7400÷25×4】 =25×4)×27 =125×64×5 =7400÷100 =100×27 =125×8×8×5 =74 =2700 =(125×8)×8×5 16125×5×8×40 ⑦125×8×25×4 =1000×40 =(125×8)×5×40 =(125×8)×25×4 =40000 =1000×200 =1000×100 ⑥(25×25×25×25)×16 =200000 =100000 =25×4)×25×4)×25×4)×25×4)÷4> ⑧25×32×13 ①40+4)×25 =25×4×8×13 =50×50×50×50 =40×25+4×25 =1000+100 =25×4)×8×13) =6250000 =1100 =100×104 ①25×60+12)×11 =10400 ①8165×78+37×78-78×2 =（25×60+25×12×11 ⑨125×64×8 =78×165+37-2) =1500+300)×11 =125×8)×64 =78×200 =1800×11 =15600 =1000×64 =19800 =64000 1⑧125×40×25×7 、提升题 人教版四年级下册数学《运算 ⑩125×25×32×96 =(125×40)×(25×7 律》分类练习题18答案 =125×25×8×4×96 =5000×175 一、基础题 =125×8)×25×4)×96 =875000 ①125×8×14 =1000×100×96 人教版四年级下册数学《运算 =125×8)×14 =9600000 律》分类练习题19答案 =1000×14 ①(75+75+75)×4×25 ①25×4+16) =14000 =75×3×4×25 ②25×22×4 =25×4+25×16 =225×100 =100+400 =(25×4)×22 =22500 =500 =100×22 12125×24+12)×8 ②12×50+3 =2200 =125×36×8 ③125×72 =12×50+12×3 =125×8×36 =125×8×9 =600+36 =1000×36=36000 =636 =1000×9 =9000 ③(125+125)×8×129 ③(15+25)×8 ④25×44×2 =125×2×8×129 =15×8+25×8 =25×2)×44 =125×8)×2×129 =120+200 =320 =50×44 =1000×258 =2200 =258000 ④(80-8)×125 ⑤125×16×4 1④5×25×125×256×95 =80×125-8×125 =125×8×2×4 =5×25×125×4×4×16×95 =10000-1000 =(125×8)×2×4) =(5×4)×25×4)×(125×16)×95 =9000 =1000×8 =20×100×2000×95 =8000 =380000000 54/62 ⑤42×35+58×35 ⑤256×18+256×81+256 =810 =(42+58)×35 =256×18+81+1 ⑦58×12+42×12 =100×35 =256×100 =58+42)×12 =3500 =25600 =100×12 ⑥73×19+27×19 ⑥101×78-78 =1200 =（73+27)×19 =101-1)×78 ⑧12×(100+5) =100×19 =100×78 =12×100+12×5 =1900 =7800 =1200+60 ⑦128×45-28×45 ①305×6+305×3+305×1 =1260 =(128-28)×45 =305×6+3+1 ⑨217×45-17×45 =100×45 =305×10 =217-17)×45 =4500 =3050 =200×45 ⑧345×28-45×28 ⑧179×27+179×72+179 =9000 =345-45)×28 =179×27+72+1 二、提升题 =300×28 =179×100 ⑩28×10+30+100 =8400 =17900 =28×10+28×30+28×100 ⑨18×100+2 =280±840±2,800 人教版四年级下册数学《运算 =3920 =18×100+18×2 律》分类练习题20答案 =1800+36 ①(150+90-30)×12 =1836 ①24×5+10) =150×12+90×12-30×12 二、提升题 =24×5+24×10 =1800+1080-360 ⑩42×(10+20+50 =120+240 =2520 =360 ②189×3+189×5+189×2 =42×10+42×20+42×50 =420+840+2100 ②35×20+4 =189×3+5+2) =3360 =35×20+35×4 =189×10 ①99×46+46 =700+140 =1890 =99×46+1×46 =840 1③325×19+325×80+325 =(99+1)×46 ③37×28+63×28 =325×(19+80+1 =100×46 =37+63)×28 =325×100 =4600 =100×28 =32500 1②(300+120-20×25 =2800 ①④98×56+56 =300×25+120×25-20×25 ④(16+24)×5 =（98+1)×56 =7500+3000-500 =16×5+24×5 =99×56 =10000 =80+120 =5544 1③198×4+198×5+198×1 =200 1⑤102×89-89 =198×4+5+1 ⑤156×34-56×34 =（102-1)×89 =198×10 =(156-56×34 =101×89 =1980 =100×34 =8989 ④15×80+4+200 =3400 1⑥18×60+8+150 =15×80+15×4+15×200 ⑥(90-9×10 =18×60+18×8+18×150 =1200+60+3000 =90×10-9×10 =1080+144+2700 =4260 =900-90 =3924 55/62 ①258×7+258×2+258×1 ⑦15×98+15×2 =57×100+2) =258×7+2+1 =15×98+2) =5700+114 =258×10 =15×100 =5814 =2580 =1500 1⑥88×101-88 1⑧199×36+199×63+199 ⑧135×101-135 =88×(101-1 =199×(36+63+1) =135×(101-1 =88×100 =199×100 =135×100 =8800 =19900 =13500 ①72×99 ⑨68x102 72x100升 人教版四年级下册数学《运算 =68×(100+2) =72×100-72×1 律》分类练习题21答案 =68×100+68×2 =7200-72 一、基础题 =6800+136 =7128 ①35×101 =6936 1⑧29×157+29×44-29 =35×(100+1 二、提升题 =29×157+44-1 =35×100+35×1 ⑩99×998 =29×200 =3500+35 =99×1000-2 =5800 =3535 =99×1000-99×2 ②502×12 =99000-198 人教版四年级下册数学《运算 =(500+2)×12 =98802 律》分类练习题22答案 =500×12+2×12 ①36×127+36×72-36 一、基础题 =6000+24 =36×(127+72-1) ①34×102 =6024 =36×198 =34×100+2) ③708×25 =36×200-2 =34×100+34×2 =700+8)×25 =7200-72 =3400+68 =700×25+8×25 =7128 =3468 =17500+200 1248×76+25×48-48 ②702×15 =17700 =48×76+25-1 =（700+2)×15 ④96×38 =48×100 =700×15+2×15 =(100-4)×38 =4800 =10500+30 =100×38-4×38 1③85×102-170 =10530 =3800-152 =85×102-85×2 ③906×20 =3648 =85×102-2) =（900+6)×20 ⑤89×42 =85×100 =900×20+6×20 =(90-1)×42 =8500 =18000+120 =90×42-1×42 1④198×76 =18120 =3780-42 ④94×25 =200-2)×76 =3738 =(100-6)×25 ⑥42×99+42 =200×76-2×76 =15200-152 =100×25-6×25 =42×99+1 =15048 =2500-150 =42×100 ⑤57×99+57+57×2 =2350 =4200 =57×(99+1+2) =57×102 56/62 ⑤78×45 ③93×102-186 =700×20+5×20=14000+100 =(80-2)×45 =93×102-93×2 =14100 ④92×25 =80×45-2×45 =93×102-2 =3600-90 =93×100 =90+2)×25 =3510 =9300 =90×25+2×25=2250+50 ⑥56×99+56 ④199×68 =2300 ⑤68×55 =56×99+1 =200-1×68 =（70-2)×55 =56×100 =200×68-1×68 =5600 =13600-68 =70×55-2×55=3850-110 ⑦22×98+22×2 =13532 =3740 =22×(98+2 ①⑤43×99+43+43×2 ⑥48×99+48 =43×(99+1+2) =48×99+1 =22×100 =2200 =43×102 =48×100=4800 ⑧158×101-158 ⑦18×98+18×2 =43×100+2 =158×101-1 =18×98+2) =4300+86 =158×100 =4386 =18×100=1800 =15800 677×101-77 ⑧145×101-145 ⑨45×103 =77×(101-1 =145×101-1) =45×100+3) =77×100 =145×100=14500 =45×100+45×3 =7700 ⑨55×102 =4500+135 ①89×999 =55×100+2) =4635 =89×1000-1) =55×100+55×2=5500+110 二、提升题 =89×1000-89×1=89000-89 =5610 ⑩97×999 =88911 二、提升题 =97×1000-1) 1⑧34×125+34×74-34 1096×999 =97×1000-97×1 =34×(125+74-1 =96×1000-1) =97000-97 =34×198=34×200-2 =96×1000-96×1=96000-96 =96903 =95904 =6800-68=6732 1①52×136+52×63-52 1①58×127+58×72-58 =52×136+63-1) 人教版四年级下册数学《运算 =58×127+72-1 =52×198 律》分类练习题23答案 =58×198=58×200-2 =52×200-2 、 基础题 =11600-116=11484 =10400-104 ①36×101 1②42×89+43×42-42 =10296 =36×(100+1) =42×89+43-1 237×89+38×37-37 =36×100+36×1=3600+36 =42×131=42×130+1) =37×(89+38-1) =3636 =5460+42=5502 =37×126 ②501×14 ③89×102-178 =37×120+6 =500+1×14 =89×102-89×2 =4440+222 =500×14+1×14=7000+14 =89×102-2)=89×100=8900 =4662 =7014 1④198×72 ③705×20 =200-2)×72 =700+5)×20 57/62 =200×72-2×72=14400-144 ⑤35×98+70 ②45×56+90×22 =14256 =35×98+35×2 =45×56+45×2×22 1⑤39×99+39+39×2 =35×98+2 =45×56+44 =39×99+1+2 =35×100 =45×100 =39×102=39×100+2 =3500 =4500 =3900+78=3978 ⑥1111×36+9999×4 1378×98-80 1666×101-66 =1111×36+1111×9×4 =78×100-2)-80 =66×101-1) =1111×36+36 =7800-156-80 =66×100=6600 =1111×72 =7800-236 1①79×999 =80000-1111×-8) =7564 =79×1000-1) =79992 1④125×80+16)×8 =79×1000-79×1=79000-79 ⑦560×25+280×50 =125×8×80+16 =78921 =280×2×25+280×50 =1000×96 1⑧28×135+28×64-28 =280×50+280×50 =96000 =28×135+64-1 =280×50+50) 1⑤48×76+51×76+76 =28×198=28×200-2 =280×100 =76×48+51+1 =5600-56=5544 =28000 =76×100 ⑧9×123-9×13+108×9 =7600 人教版四年级下册数学《运算 =9×123-13+108 16333×666+999×111 律》分类练习题24答案 =9×218 =333×666+333×3×111 一、基础题 =1962 =333×666+333 ①25×20+8)×12 ⑨25×40+5)×8 =333×999 =25×20+25×8)×12 =25×8×40+5 =333×1000-1 =(500+200)×12 =200×45 =333000-333 =9000 =332667 =700×12 二、提升题 ⑦12×178-12×12+12×44 =8400 ⑩999×997+1994 ②(125+125+125+125)×4×1 =12×(178-12+44 =999×997+2×997 =12×210 =125×4×4×1 =999+2)×997 =2520 =500×4 1⑧67×999+68 =2000 =1001×997 =(1000+1)×997 ③125×500+55) =67×(1000-1)+68 =997000+997 =67000-67+68 =125×500+125×55 =997997 =67001 =62500+6875 ①234×1999-233×2000 =69375 人教版四年级下册数学《运算 ④56×89+44×89-890 =234×2000-1-233×2000 律》分类练习题25答案 =89×56+44)-89×10 =234×2000-234-233×2000 =234-233)×2000-234 、 基础题 =89×(100-10) =2000-234 ①15×20+8)×4 =89×90 =1766 =15×4×20+8 =8010 =60×28 =1680 58/62 ②(125+125+125×5×16 ⑩999×996+1992 =3000 =125×3×5×16 =999×996+996×2 1⑧56×999+57 =125×16×3×5 =(999+2)×996 =56×1000-1)+57 =2000×15 =1001×996 =56000-56+57 =30000 =1000+1×996 =56001 ③125×400+88) =996000+996 人教版四年级下册数学《运算 =125×400+125×88 =996996 律》分类练习题26答案 =50000+11000 ①123×1998-122×1999 =61000 基础题 =123×1999-1-122×1999 ④45×76+55×76-760 ①4800÷25÷4 =123×1999-123-122×1999 =76×45+55)-76×10 =4800÷25×4 =(123-122)×1999-123 =76×100-10 =4800÷100 =1999-123 =48 =76×90 =1876 ②3600÷12÷3 =6840 1236×45+72×27 ⑤25×98+50 =36×45+36×2×27 =3600÷(12×3 =25×98+25×2 =36×45+54 =3600÷36 =25×98+2 =100 =36×99 ③5400÷18÷5 =25×100 =36×100-1 =2500 =5400÷(18×5 =3600-36 ⑥1111×18+9999×2 =5400÷90 =3564 =1111×18+1111×9×2 1③65×97-67 =60 =1111×18+18 ④5600÷7×8) =65×(100-3-67 =1111×36 =5600÷7÷8 =6500-195-67 =39996 =800÷8 =6500-262 ⑦480×15+240×30 =100 =6238 =240×2×15+240×30 ④125×(80+24)×4 ⑤4500÷(9×5) =240×30+240×30 =4500÷9÷5 =240×30+30 =125×4×80+24) =500÷5 =240×60 =500×104 =100 =14400 =52000 ⑥7200÷(12×6) ⑧8×135-8×25+110×8 ⑤36×89+63×89+89 =7200÷12÷6 =8×(135-25+110 =89×36+63+1) =600÷6 =8×220 =89×100 =100 =1760 =8900 ⑦2800÷35÷2 ⑨25×50+4)×6 16222×777+666×111 =2800÷35×2) =222×777+222×3×111 =25×6×50+4 =2800÷70 =222×777+333 =40 =150×54 =222×1110 ⑧9600÷24÷5 =8100 =246420 二、提升题 =9600÷24×5) ①15×148-15×18+15×70 =9600÷120 =15×148-18+70 =80 =15×200 59/62 ⑨6300÷(9×7) 人教版四年级下册数学《运算⑩10800÷18÷6 =6300÷9÷7 律》分类练习题27答案 =10800÷(18×6 =700÷7 一、基础题 =10800÷108 =100 ①2400÷12÷2 =100 二、提升题 =2400÷12×2） ①14000÷25÷8 012800÷16÷8 =2400÷24 =14000÷25×8) =12800÷16×8) =100 =14000÷200 =12800÷128 ②4200÷21÷2 =70 =100 =4200÷（21×2) 28100÷27×3) ①1500÷25÷6 =4200÷42 =8100÷27÷3 =1500÷(25×6) =100 =300÷3 =1500÷150 ③5000÷25÷4 =100 =10 =5000÷25×4】 1③12000÷24×5) 1②8400÷(14×6 =5000÷100 =12000÷24÷5 =8400÷14÷6 =50 =500÷5 =600÷6 ④7200÷8×9 =100 =100 ④7500÷15÷5 =7200÷8÷9 1③9000÷25×9 =900÷9 =7500÷15×5 =9000÷25÷9 =100 =7500÷75 =360÷9 ⑤4800÷16×3 =100 =40 =4800÷16÷3 1⑤16000÷32÷5 ④7800÷13÷6 =300÷3 =16000÷32×5 =7800÷13×6) =100 =16000÷160 =7800÷78 ⑥3200÷16÷5 =100 =100 =3200÷(16×5) ⑥10000÷20×5 1⑤14400÷48÷3 =3200÷80 =10000÷20÷5 =14400÷(48×3) =40 =500÷5 =14400÷144 ⑦6400÷8×10 =100 =100 =6400÷8÷10 ①12600÷14×9 1610500÷(15×7 =800÷10 =12600÷14÷9 =10500÷15÷7 =80 =900÷9 =700÷7 ⑧9000÷30÷3 =100 =100 =9000÷30×3) 1⑧15000÷25÷6 ①12600÷(18×7) =9000÷90 =15000÷25×6 =12600÷18÷7 =100 =15000÷150 =700÷7 ⑨2800÷4×7) =100 =100 =2800÷4÷7 1⑧5000÷25÷4 人教版四年级下册数学《运算 =700÷7 =5000÷25×4) 律》分类练习题28答案 =100 =5000÷100 二、提升题 、基础题 =50 60/62 ①(800+160)÷8 ①(1080-72)÷36 ②34×25-12×25+8×25 =800÷8+160÷8 =1080÷36-72÷36 =25×34-12+8) =100+20 =30-2 =25×30 =120 =28 =750 ②（720-36)÷12 21200÷25+800÷25 ③98×12+98×18-98×10 =720÷12-36÷12 =1200+800÷25 =98×12+18-10 =60-3 =2000÷25 =98×20 =57 =80 =1960 ③(900+45)÷15 1③1400÷35-700÷35 ④56×15+56×25+56×60 =900÷15+45÷15 =(1400-700÷35 =56×15+25+60 =60+3 =700÷35 =56×100 =63 =20 =5600 ④480÷6+300÷6 ①④(2400+480)÷48 ⑤42×36-15×36+73×36 =480+300)÷6 =2400÷48+480÷48 =36×42-15+73 =780÷6 =50+10 =36×100 =130 =60 =3600 ⑤750÷15-300÷15 ⑤1800÷45+900÷45 ⑥75×24+75×36-75×10 =(750-300)÷15 =1800+900÷45 =75×24+36-10 =450÷15 =2700÷45 =75×50 =30 =60 =3750 ⑥560÷8+240÷8 16(3600-180)÷18 ⑦132×17+132×23+132×60 =560+240÷8 =3600÷18-180÷18 =132×17+23+60 =800÷8 =200-10 =132×100 =100 =190 =13200 ⑦(1200+240)÷24 1①2250÷15+1500÷15 ⑧63×45-21×45+58×45 =1200÷24+240÷24 =2250+1500)÷15 =45×63-21+58 =50+10 =3750÷15 =45×100 =60 =250 =4500 ⑧(630-42)÷21 18(4200+560)÷56 ⑨150×28+150×32-150×20 =630÷21-42÷21 =4200÷56+560÷56 =150×28+32-20 =30-2 =75+10 =150×40 =28 =85 =6000 ⑨960÷12+360÷12 、提升题 =(960+360)÷12 人教版四年级下册数学《运算 ⑩258×12+258×38+258×50 律》分类练习题29答案 =1320÷12 =258×(12+38+50 =110 一、 基础题 =258×100 二、提升题 ①125×3+125×5+125×2 =25800 ©1500+300)÷30 =125×3+5+2 1①147×34-52×34+105×34 =1500÷30+300÷30 =125×10 =34×147-52+105) =50+10 =1250 =34×200 =60 =6800 61/62 1②327×25+327×45-327×10 ③85×18+85×22-85×10 1③438×12+438×28+438×60 =327×25+45-10 =85×18+22-10 =438×(12+28+60 =327×60 =85×30 =438×100 =19620 =2550 =43800 1③418×19+418×21+418×60 ④44×25+44×35+44×40 1④512×35-178×35+666×35 =418×19+21+60) =44×25+35+40 =35×512-178+666 =418×100 =44×100 =35×1000 =41800 =4400 =35000 1④536×28-178×28+642×28 ⑤56×16-21×16+65×16 1⑤670×22+670×38-670×10 =28×536-178+642) =16×56-21+65 =670×22+38-10 =28×1000 =16×100 =670×50 =28000 =1600 =33500 1⑤675×16+675×24-675×10 ⑥120×32+120×28-120×20 ⑥789×19+789×31+789×50 =675×16+24-10 =120×(32+28-20 =789×19+31+50 =675×30 =120×40 =789×100 =20250 =4800 =78900 16729×33+729×47+729×20 ⑦99×14+99×36+99×50 ①840×42-250×42+410×42 =729×33+47+20 =99×(14+36+50 =42×840-250+410 =729×100 =99×100 =42×1000 =72900 =9900 =42000 1①846×42-253×42+407×42 ⑧72×27-36×27+64×27 18935×24+935×36-935×10 =42×846-253+407 =27×72-36+64 =935×24+36-10 =42×1000 =27×100 =935×50 =42000 =2700 =46750 18915×22+915×38-915×10 ⑨150×18+150×22+150×60 =915×22+38-10 =150×18+22+60 =915×50 =150×100 =45750 =15000 提升题 人教版四年级下册数学《运算 ⑩256×15+256×25+256×60 律》分类练习题30答案 =256×(15+25+60) 一、基础题 =256×100 ①135×4+135×5+135×1 =25600 =135×4+5+1) ①143×28-57×28+114×28 =135×10 =28×(143-57+114 =1350 =28×200 ②28×12-14×12+8×12 =5600 =12×28-14+8 12321×30+321×40-321×10 =12×22 =321×30+40-10 =264 =321×60 =19260 62/62