混合运算练习500题（专项训练）-2026-2027学年三年级上册数学人教版

三年级上册数学·混合运算练习(500题带答案) 依据：人教版义务教育教科书《数学》三年级上册·第二单元《混合运算》 运算顺序提示：①只有加、减法或只有乘、除法的算式，从左往右按顺序计算；②既有乘、除法， 又有加、减法的算式，先算乘、除法，再算加、减法：③算式里有括号，先算括号里面的。 一、只有加、减法的算式（从左往右计算) 1.105-45+25= 2.50+55-35= 3.90-60+55= 4.95-60+55= 5.125+55-30= 6.150+60-60= 7.95-35-40= 8.55+35-50= 9.65+35-35= 10.40+4055= 11.145-35+15= 12.140-55+20= 13.150-60+25= 14.80-30+60= 15.120-30-35= 16.110+40-30= 17.60+10-40= 18.125-45+45= 19.170-25-45= 20.130+55-10= 21.125-55+60= 22.45+20叶45= 23.65-20+20= 24.115+30-35= 25.35+25+45= 26.70+35-55= 27.130叶40-10= 28.130+50-60= 29.195-35-40= 30.80+35-30= 31.130-45+30= 32.130+20-15= 33.45+30-45= 34.65+30-25= 35.120-20-25= 36.95+60-60= 37.125-45+50= 38.195-40-35= 39.105-40+25= 40.115+35-35= 41.115+15-55= 42.110+50-50= 43.115-35+15= 44.80+35-20= 45.105-35+20= 46.65+55-50= 47.135+15-60= 48.80+55-35= 49.140-40+30= 50.100+6060= 51.65+40-50= 52.95-20-40= 53.105+35-60= 54.170-45-25= 55.45+45-20= 56.125+60-55= 57.150+15-40= 58.135+10-20= 59.120+55-30= 60.90-30-40= 61.25+20叶10= 62.145+10-60= 63.135+55-60= 64.80+55-10= 65.85-35+35= 66.85-30+40= 67.165-45-25= 68.135+55-25= 69.60-55+25= 70.130-2050= 71.50+25+15= 72.150叶15-30= 73.20+30叶40= 74.130+45-35= 75.115-20-45= 76.150-20+25= 77.10+10+45= 78.115-30+30= 79.80+50-40= 80.100+55-30= 81.65+55-35= 82.100+20-40= 83.10+15+20= 84.75-30+55= 85.75-30+60= 86.70+60-55= 87.135-40+40= 88.115-60+25= 89.110+45-50= 90.110-30+25= 91.130-40-45= 92.85-45+10= 93.50+50-45= 94.115-60+30= 95.90+25-15= 96.75+60-45= 97.100-25-45= 98.95-30+25= 99.80-60+30= 100.150+40-40= 二、只有乘、除法的算式（从左往右计算) 101.5×6×2= 102.63÷7×6= 103.15÷3×2= 104.15÷5÷3= 105.64÷8×4= 106.12÷6×2= 107.16:2×3= 108.4×8×4= 109.25÷5×2= 110.21÷7×2= 111.32÷4×8= 112.27:9×4= 113.15÷3÷5= 114.28÷7×7= 115.8×6÷6= 116.45÷5×4= 117.48÷8×7= 118.35÷7×8= 119.8×4×6= 120.9×2÷2= 121.2×8×6= 122.9×9÷3= 123.2×3×4= 124.42÷7×7= 125.72÷9×9= 126.9×8÷6= 127.3×6÷3= 128.24÷3÷2= 129.4×3×7= 130.7×6×4= 131.16÷2÷2= 132.48÷2÷8= 133.8×5×2= 134.56÷7÷8= 135.6×2×3= 136.54÷3.6= 137.18÷6×8= 138.7×4×6= 139.54÷9×3= 140.63÷2= 141.3×9:9= 142.32÷8×5= 143.8×5÷8= 144.45.9×6= 145.6÷2×5= 146.80÷8÷2= 147.3×2÷6= 148.64÷8÷2= 149.8×3÷6= 150.72÷8×4= 151.5×8×8= 152.8×63= 153.6×7÷6= 154.3×3×3= 155.70÷2÷5= 156.6÷2×9= 157.4×4×6= 158.16÷8×8= 159.16÷8×5= 160.14÷2×7= 161.8×5÷2= 162.8÷4×6= 163.36÷9÷4= 164.2×5×8= 165.80÷2÷5= 166.12÷3×2= 167.18÷3×7= 168.2×3÷3= 169.3×7-3= 170.7×6×6= 171.605÷2= 172.40÷5×5= 173.4×3×6= 174.56÷7×3= 175.6×9片÷3= 176.486×8= 177.4×5÷5= 178.35÷5÷7= 179.7×2÷7= 180.25÷5×8= 181.4×6×2= 182.4×7÷7= 183.40÷8÷5= 184.10÷5×2= 185.18÷3×4= 186.5×8×3= 187.24÷4×8= 188.4×7×2= 189.6×4÷8= 190.60÷6:2= 191.9×2÷6= 192.5×7×4= 193.5×3×2= 194.32÷8×4= 195.4×5×3= 196.3×4×5= 197.32÷4×9= 198.18÷3×5= 199.3×7×4= 200.7×2×7= 三、乘除与加减混合的算式（先算乘、除法，再算加、减法） 201.24÷4+15= 202.7×6+6×8= 203.9×5+6×3= 204.2×2+4×3= 205.2×3+7×8= 206.7×6-11= 207.150-5×6= 208.4×9+8×2= 209.3×9+2×6= 210.6×9-47= 211.4×9+7×5= 212.9×6+2×7= 213.75-2×5= 214.40+2×2= 215.8×4+7×7= 216.213+10= 217.30+4×3= 218.2×7+5×4= 219.8×7+5×2= 220.7×8+55= 221.7×2+60= 222.5×2-9= 223.4×2+8×6= 224.91-7×8= 225.8×9+8×4= 226.8×3+6×8= 227.4×3+7×6= 228.8×9+3×3= 229.36÷9+25= 230.87-4×8= 3 231.9×3-14= 232.96-3×7= 233.5×9-22= 234.87-8×4= 235.8×8-57= 236.5×3+7×8= 237.2×9-1= 238.6×947×4= 239.6÷2+10= 240.9×7-48= 241.76-7×8= 242.4×7+8×5= 243.2×5+2×7= 244.8×6-19= 245.119-4×6= 246.4×8+5×4= 247.6×6-20= 248.9×8+3×6= 249.145-9×5= 250.2×4+20= 251.107-2×6= 252.55-7×7= 253.4×6-9= 254.40+3×5= 255.9×9-33= 256.7×6-4= 257.40÷8+15= 258.8×9-66= 259.35+3×9= 260.9×3-25= 261.143-2×4= 262.2×2+2×8= 263.8÷2+50= 264.36÷4+25= 265.9×7+3×8= 266.116-3×2= 267.4×6-8= 268.7×2+2×3= 269.63+35= 270.45+6×4= 271.4×4+6×3= 272.7×5+3×7= 273.7×9+5×2= 274.5×8+45= 275.8×9-58= 276.72÷8+50= 277.4×7+5×3= 278.4×6-3= 279.4×4+20= 280.51-9×4= 281.6×7+5×6= 282.2×8+2×5= 283.7×7+35= 284.4×6+20= 285.4×7-8= 286.30+7×8= 287.66-7×8= 288.4×4+5×4= 289.9×7-23= 290.4×8+3×2= 291.35-7×2= 292.8×7-49= 293.64-7×7= 294.8×7-9= 295.6×3+6×4= 296.4×2+3×8= x 297.15÷5+60= 298.8×2-6= 299.7×6+2×8= 300.45:9+45= 301.2×4+7×3= 302.8×8-58= 303.9×7+4×6= 304.5×8+3×3= 305.7×5+7×2= 306.8×5+4×7= 307.3×5+8×4= 308.6×3-16= 309.5×3+3×6= 310.8×3+3×7= 311.72÷9+60= 312.9×6+2×8= 313.113-2×9= 314.8×9+6×2= 315.28-2×9= 316.25+9×5= 317.2×8+3×5= 318.30+6×2= 319.60+2×6= 320.50-3×4= 321.4×9+5×4= 322.5×3-3= 323.125-4×5= 324.3×5-7= 325.5×2+4×5= 326.35-7×3= 327.8×8-2= 328.8×6+2×2= 329.4×9+2×4= 330.9×3-10= 331.35+5×7= 332.30:6+60= 333.6×4+6×4= 334.4×8+2×6= 335.4×8+7×4= 336.2×7+3×4= 337.90-8×5= 338.9×6+6×4= 339.77-8×9= 340.9×8-7= 341.5×6+3×7= 342.6×7+2×3= 343.104-9×6= 344.2×8+10= 345.5×9+6×6= 346.4×8+5×6= 347.2×3+2×6= 348.90-5×7= 349.4×3+10= 350.2×8+25= 四、带小括号的算式（先算括号里面的） 351.130-(75-25)= 352. (90-50)÷8= 353.(70-40)×9= 354.(60-55)×7= 355.(40-35)×7= 356.(85-50)÷5= 357.(45-10)x3= 358.80-(40-30)= 359.(85-45)×4= 5 360.(90-45)×2= 361.(110-10)÷4= 362.(45+35)÷5= 363.85-(80-15)= 364. (55+55)÷5= 365.110-(100-15)= 366.150-(120-20) 367.(50-20)÷6= 368. (110-10)÷5= 369.80-(60-10)= 370.65-(65-35)= 371.(90-50)×6= 372.60-(40-20)= 373.115-(65-35)= 374.150-(60-15)= 375.(100-10)÷3= 376.(65-60)×8= 377.130-(50-10)= 378.(85-25)÷2= 379.14÷(7×2)= 380.(55+35)÷6= 381.(60+30)÷3= 382.145-(40-20)= 383.90-(95-15)= 384.145-(45-30)= 385.95-(105-30)= 386.145-(55-35)= 387.85-(45-20)= 388. (50-20)÷2= 389. (70-25)÷5= 390.(120-15)×2= 391.(55-25)×3= 392.150-（100-30)= 393.115-(90-35)= 394.60-(45-10)= 395.(65-20)9= 396.(25+20)÷3= 397.(60叶45)÷3= 398.(30-15)÷5= 399.(70-50)×7= 400.(50-25)×6= 401.150-(90-40)= 402.110-(80-25)= 403.(75-40)×4= 404.80÷(8×2)= 405.130-(40-10)= 406.15÷（3×5)= 407.95-(65-15)= 408.(25+50)÷3= 409.150-(115-35) 410.120-(65-15)= 411.115-(45-30)= 412.115-(65-10) 413.90-(70-10)= 414.75-(45-35)= 415.(30-25)×5= 416.85-(85-35)= 417.75-(75-40)= 418.(30-15)×7= 419.(45-10)÷5= 420.90-(65-35)= 421.(100-35)×4= 422.(100-55)÷5= 423.(120-50)×3= 424.105-(60-35)= 425.140-(95-25)= 426.(45-25)×5= 427.125-(65-40)= 428.110-(80-40)= 429.100-(90-15)= 430.(80-40)÷4= 431.85-(70-25)= 432.105-(110-25)= 433.120-(55-10)= 434.24÷(6×4)= 435.60-(55-40)= 436.(80-40)×7= 437.(10+50)÷4= 438.110-(55-15)= 439.150-(45-40)= 440.95-(55-15)= 441.（25+15)÷5= 442.(65-20)×5= 443.145-(110-40)= 444.130-(60-35)= 445.27÷(3×9)= 446.65-(60-20)= 447.105-(75-40)= 448.85-(40-15)= 449.105-(45-25)= 450.110-(105-20)= 451.(25+40)÷5= 452.85-(40-35)= 453.105-(45-15)= 454.140-(75-20)= 455.(40-10)×2= 456.(40+60)÷4= 457.75-(85-25)= 458.105-(75-20)= 459.150(60-35)= 460.140-(45-20) 461.130-(85-25)= 462.(35-20)×2= 463.80-(110-35) 464.130-(45-35)= 465.110-(110-25)= 466.80-(60-35)= 467. (45-15)×8= 468.(30-20)×7= 469.(55+45)÷5= 470. (35+55)÷9= 471.(65-50)×8= 472.(115-45)×2= 473.80-(70-10)= 474.110-(65-25)= 475.130-(95-40)= 476.95-（115-25)= 477.90-(50-25)= 478.115-(115-25)= 479.100-(105-35)= 480.135-(70-35)= 481.120-(70-25)= 482.140-(95-15)= 483.(105-55)×2= 484.145-(60-10)= 485.140-(50-35)= 486.95-(50-25)= 487.125-(95-25)= 488.(100-55)×5= 489.115-(80-25)= 490.65-(50-25)= 491.100-(45-30)= 7 492.(60-50)×4= 493.(75-55)÷2= 494.(60-45)×7= 495.130-(45-30)= 496.（35-15)×6= 497.115-(65-30)= 498.(10+50)÷3= 499.(50-20)×5= 500.(120-60)×5= 8 参考答案 1.105-45+25=85 2.50+55-35=70 3.90-60+55=85 4.95-60叶55=90 5.125+55-30=150 6.150+60-60=150 7.95-35-40=20 8.55+35-50=40 9.65+35-35=65 10.40+40-55=25 11.145-35+15=125 12.140-55+20=105 13.150-60+25=115 14.80-30+60=110 15.120-30-35=55 16.110+40-30=120 17.60+10-40=30 18.125-45+45=12519.170-25-45=100 20.130+55-10=175 21.125-55+60=130 22.45+20+45=110 23.65-20+20=65 24.115+30-35=110 25.35+25+45=105 26.70+35-55=50 27.130+40-10=160 28.130+50-60=120 29.195-35-40=120 30.80+35-30=85 31.130-45+30=115 32.130+20-15=135 33.45+30-45=30 34.65+30-25=70 35.120-20-25=75 36.95+60-60=95 37.125-45+50=130 38.195-40-35=120 39.105-40+25=90 40.115+35-35=115 41.115+15-55=75 42.110+50-50=11043.115-35+15=95 44.80+35-20=95 45.105-35+20=90 46.65+55-50=70 47.135+15-60=90 48.80+55-35=100 49.140-40+30=130 50.100+60-60=100 51.65+40-50=55 52.95-20-40=35 53.105+35-60=80 54.170-45-25=100 55.45+45-20=70 56.125+60-55=130 57.150+15-40=125 58.135+10-20=12559.120+55-30=145 60.90-30-40=20 61.25+20+10=55 62.145+10-60=9563.135+55-60=130 64.80+55-10=125 65.85-35+35=85 66.85-30+40=95 67.165-45-25=95 68.135+55-25=165 69.60-55+25=30 70.130-20-50=60 71.50+25+15=90 72.150+15-30=135 73.20+30+40=90 74.130叶45-35=140 75.115-20-45=50 76.150-20+25=155 77.10+10+45=65 78.115-30+30=115 79.80+50-40=90 80.100+55-30=125 81.65+55-35=85 82.100+20-40=80 83.10+15+20=45 84.75-30+55=100 9 85.75-30+60=105 86.70+60-55=75 87.135-40+40=135 88.115-60+25=80 89.110+45-50=105 90.110-30+25=105 91.130-40-45=45 92.85-45+10=50 93.50+50-45=55 94.115-60+30=85 95.90+25-15=100 96.75+60-45=90 97.100-25-45=30 98.95-30+25=90 99.80-60+30=50 100.150+40-40=150 101.5×6×2=60 102.63÷7×6=54 103.15÷3×2=10 104.15÷5÷3=1 105.64÷8×4=32 106.12÷6×2=4 107.16÷2×3=24 108.4×8×4=128 109.25÷5×2=10 110.21÷7×2=6 111.32÷4×8=64 112.279×4=12 113.15÷3÷5=1 114.28÷7×7=28 115.8×6÷6=8 116.45÷5×4=36 117.48÷8×7=42 118.35÷7×8=40 119.8×4×6=192 120.9×2÷2=9 121.2×8×6=96 122.9×9:3=27 123.2×3×4=24 124.42÷7×7=42 125.72÷9×9=72 126.9×8÷6=12 127.3×6÷3=6 128.24÷3÷2=4 129.4×3×7=84 130.7×6×4=168 131.16÷2÷2=4 132.48÷2÷8=3 133.8×5×2=80 134.56÷7÷8=1 135.6×2×3=36 136.54÷3÷6=3 137.18÷6×8=24 138.7×4×6=168 139.54:9×3=18 140.63÷2=1 141.3×9:9=3 142.32÷8×5=20 143.8×5÷8=5 144.45:9×6=30 145.6÷2×5=15 146.80÷8÷2=5 147.3×2÷6=1 148.64÷8÷2=4 149.8×3÷6=4 150.72÷8×4=36 151.5×8×8=320 152.8×6÷3=16 153.6×7-6=7 154.3×3×3=27 155.70÷2÷5=7 156.6÷2×9=27 157.4×4×6=96 158.16÷8×8=16 159.16÷8×5=10 160.14÷2×7=49 161.8×5÷2=20 162.8÷4×6=12 163.36÷9÷4=1 164.2×5×8=80 165.80÷2÷5=8 166.12÷3×2=8 167.18÷3×7=42 168.2×3÷3=2 169.3×7-3=7 170.7×6×6=252 171.60÷5÷2=6 172.40÷5×5=40 10 II 乙=S7-￡x6097 9=6×E+SE'6S7 9=99-6×88s7 0z=ST+80t‘LS7 8E=t-9×L9S7 8t=￡E-6×6"SSZ SS=S×E+0h'SZ SI=6-9xb·ESZ 9=LxL-SS乙SZ S6=9×乙-L0I·IS乙 8乙=0沉+b×乙'0S乙 00I=S×6-SbL6t乙 06=9×E+8×68t7 9[=07-9×9‘Lh元 乙S=bxS+8xb9t元 s6=9xb-6II·sb乙 67=6I-9×8t忆 t忆=L×+S×Z‘忆 89=Sx8+L×b乙t忆 0z=8×L9L‘It忆 SI-8t-Lx6 Ot EI=0I+忆：967 Z8=t×L+6×987 LI=I-6×Z“LZ IL=8xL+E×S'9EZ L=LS-8x8'SEZ SS=bx8-L8·E乙 E乙=Z乙-6×SE￡乙 SL=LXE-96 'ZEZ EI=bI-E×6·IEZ SS=8×b-L80E7 67=S7+6-9E6Z [8=￡×￡+6×8“87乙 S=9×L+￡xb·LZ乙 乙L=8×9+E×89Z乙 0L=b×8+6×8·S乙乙 SE=8×L-I6‘t忆Z 9S=9×8+乙xb·Z乙 I=6-乙×S·Z乙乙 tL=09+z×L‘IZz III=SS+8×L'0乙 99=乙×S+L×8·6I乙 tE=bxS+L×乙8Iz 乙b=Exb+0E'LIZ LI=0I+E÷IZ9IZ I8=L×L+tx8‘SIz h=乙×乙+0bb[z S9=Sx乙-SL EIZ 89=L×乙+9x6乙I乙 IL=S×L+6×b·II L=Lh-6×90Iz 6E=9×乙+6×￡∴60沉 乙S=乙×8+6×b“80Z 0zI=9×S-0SIL0z [E=II-9×L·90Z 乙9=8×L+E×乙'S0 9L=￡xb+乙×乙·0Z 9=￡x9+S×6·07 06=8×9+9×L 乙0Z I乙=SI+t÷t乙·I0z 86=L×乙×L·007 b8=b×L×E·66I 0E=s×E÷8I86I 乙L=6×b÷乙￡·L6I 09=S×txE~96T 09=￡×S×t‘S6I 9I=tx8:78 '+6I 0E=乙×￡×SE6T 0bI=b×L×S·乙6I ￡=9：乙×6·I6I s=乙÷9：09‘06I ￡=8÷ヤx9‘681 9S=乙×L×88I 8b=8×t÷t忆‘L8I 0zI=E×8×S·981 t忆=bx÷8IS8I b=乙×s÷0I8T I=S:8:0t8I b=L÷L×b乙8I 8t=乙×9×bI8I 0b=8×S÷s7081 Z=L÷7×L6L[ I=L÷S÷SE8LI b=S÷S×b'LLI b9=8×9:8t9LI 8I=÷6×9·SLI 元=ExL:9SbLI 乙L=9xExb·ELI 261.143-2×4=135 262.2×2+2×8=20 263.8÷2+50=54 264.36÷4+25=34 265.9×7+3×8=87 266.116-3×2=110 267.4×6-8=16 268.7×2+2×3=20 269.6÷3+35=37 270.45+6×4=69 271.4×4+6×3=34 272.7×5+3×7=56 273.7×9+5×2=73 274.5×8+45=85 275.8×9-58=14 276.72÷8+50=59 277.4×7+5×3=43 278.4×6-3=21 279.4×4+20=36 280.51-9×4=15 281.6×7+5×6=72 282.2×8+2×5=26 283.7×7+35=84 284.4×6+20=44 285.4×7-8=20 286.30+7×8=86 287.66-7×8=10 288.4×4+5×4=36 289.9×7-23=40 290.4×8+3×2=38 291.35-7×2=21 292.8×7-49=7 293.64-7×7=15 294.8×7-9=47 295.6×3+6×4=42 296.4×2+3×8=32 297.15÷5+60=63 298.8×2-6=10 299.7×6+2×8=58 300.45÷9+45=50 301.2×4+7×3=29 302.8×8-58=6 303.9×7+4×6=87 304.5×8+3×3=49 305.7×5+7×2=49 306.8×5+4×7=68 307.3×5+8×4=47 308.6×3-16=2 309.5×3+3×6=33 310.8×3+3×7=45 311.72÷9+60=68 312.9×6+2×8=70 313.113-2×9=95 314.8×9+6×2=84 315.28-2×9=10 316.25+9×5=70 317.2×8+3×5=31 318.30+6×2=42 319.60+2×6=72 320.50-3×4=38 321.4×9+5×4=56 322.5×3-3=12 323.125-4×5=105 324.3×5-7=8 325.5×2+4×5=30 326.35-7×3=14 327.8×8-2=62 328.8×6+2×2=52 329.4×9+2×4=44 330.9×3-10=17 331.35+5×7=70 332.30÷6+60=65 333.6×4+6×4=48 334.4×8+2×6=44 335.4×8+7×4=60 336.2×7+3×4=26 337.90-8×5=50 338.9×6+6×4=78 339.77-8×9=5 340.9×8-7=65 341.5×6+3×7=51 342.6×7+2×3=48 343.104-9×6=50 344.2×8+10=26 345.5×9+6×6=81 346.4×8+5×6=62 347.2×3+2×6=18 348.90-5×7=55 12 351.130-(75-25) 349.4×3+10=22 350.2×8+25=41 352. (90-50)÷8=5 =80 353.(70-40)×9= 354.(60-55)×7= 355.(40-35)×7= 356. (85-50)÷5=7 270 35 35 357.(45-10)×3= 358.80-(40-30)= 359.(85-45)×4= 360.(90-45)×2= 105 70 160 90 361.(110-10)÷4=362.(45+35)÷5= 363.85-(80-15)= 364.(55+55)÷5= 25 16 20 22 365.110-(100-15) 366.150-(120-20) 368.(110-10)÷5= 367.(50-20)÷6=5 =25 =50 20 369.80-(60-10)=370.65-(65-35)=371.(90-50)×6= 372.60-(40-20)= 30 240 40 373.115-(65-35) 374.150-(60-15) 375.(100-10)÷3= 376.(65-60)×8= =85 =105 30 40 377.130-(50-10) 378.(85-25)÷2= 379.14÷(7×2)=1 380.(55+35)÷6= =90 30 15 381.(60+30)÷3= 382.145-(40-20) 383.90-(95-15) = 384.145-(45-30) 30 =125 10 =130 385.95-(105-30) 386.145-(55-35) 387.85-(45-20)=388.(50-20)÷2= =20 =125 60 15 (70-25)÷5=9 390.(120-15)×2= 391.(55-25)×3=392.150-(100-30) 389. 210 90 =80 393.115-(90-35) 394.60-(45-10)= 395.(65-20)÷9=5 396.(25+20)÷3= =60 25 15 397.(60叶45)3= 399.(70-50)×7= 400.(50-25)×6= 398. (30-15)÷5=3 35 140 150 401.150-(90-40) 402.110-(80-25) 403.(75-40)×4= 404.80÷(8×2)=5 =100 =55 140 405.130-(40-10) 406.15÷(3×5)=1 407.95-(65-15)=408.(25+50)÷3= =100 45 25 409.150-(115-35) 410.120-(65-15) 411.115-(45-30) 412.115-(65-10) =70 =70 =100 =60 413.90-(70-10)=414.75-(45-35)=415.(30-25)×5=416.85-(85-35)= 30 65 25 35 417.75-(75-40)=418.(30-15)×7= 419.(45-10)÷5=7 420.90-(65-35)= 40 105 60 421.(100-35)×4= 422.(100-55)÷5=423.(120-50)×3= 424.105-(60-35) 260 9 210 =80 425.140-(95-25) 426.(45-25)×5=427.125-(65-40) 428.110-(80-40) =70 100 =100 =70 429.100-(90-15) 430.(80-40)÷4=431.85-(70-25)=432.105-(110-25) =25 10 40 =20 433.120-(55-10) 434.24÷(6×4)=1435.60(55-40)=436.(80-40)×7= =75 45 280 13 437.(10叶50)÷4= 438.110-(55-15) 439.150-(45-40) 440.95-(55-15)= 15 =70 =145 55 442.(65-20)×5= 443.145-(110-40) 444.130-(60-35) 441.(25+15)÷5=8 225 =75 =105 445.27÷(3×9)=1 446.65-(60-20)=447.105-(75-40) 448.85-(40-15)= 25 =70 60 449.105-(45-25) 450.110-(105-20) 451.(25+40)÷5=452.85-(40-35)= =85 =25 13 80 453.105-(45-15) 454.140-(75-20) 455.(40-10)×2= 456.(40+60)÷4= =75 =85 60 25 457.75-(85-25)=458.105-(75-20) 459.150-(60-35) 460.140-(45-20) 15 =50 =125 =115 461.130-(85-25) 462.(35-20)×2= 463.80-(110-35) 464.130-(45-35) =70 30 =5 =120 465.110-(110-25) 466.80-(60-35)= 467.(45-15)×8= 468. (30-20)×7= =25 55 240 70 469.(55+45)÷5= 470.(35+55)÷9= 471.(65-50)×8= 472.(115-45)×2= 20 10 120 140 473.80-(70-10)= 474.110-(65-25) 475.130-(95-40) 476.95-(115-25) 20 =70 =75 =5 477.90-(50-25)=478.115-(115-25) 479.100-(105-35) 480.135-(70-35) 65 =25 =30 =100 481.120-(70-25) 482.140-(95-15) 483.(105-55)×2= 484.145-(60-10) =75 =60 100 =95 485.140-(50-35) 486.95-(50-25)=487.125-(95-25) 488.(100-55)×5= =125 70 =55 225 489.115-(80-25) 490.65-(50-25)=491.100-(45-30) 492.(60-50)×4= =60 40 =85 40 493.(75-55)÷2= 494.(60-45)×7=495.130-(45-30) 496.(35-15)×6= 10 105 =115 120 497.115-(65-30) 498.(10+50)3= 499.(50-20)×5= 500.(120-60)×5= =80 20 150 300 14