简便计算暑假辅导20题（试题）-六年级下册数学人教版

新人教版六年级数学简便计算暑假辅导20题 时量：40分钟 总分：100分 (1)24×(58-14+512) (2)30×(45-310+23) (3)(38+56+124)×48 (4)(56-724+512)×24 (5)(58-716+14)÷132 (6)(45+310+315)÷130 (7)49×815+49×715 (8)815×511-315×511 (9)59×119+49÷911 (10)518×1213+518÷1312 (11)825÷15+825×1415 (12)1819×710+710÷19 (13)45×344 (14)88×289 (15)32023×2022 (16)32022×2023 (17)711-59-711+59 (18)57+411+711+27 (19)1-411-311-411 (20) (1720×829)×2017 参考答案： (1)24×(58-14+512)=24×58-24×14+24× 512 =15-6+10 =19 (2)30×(45-310+23)=30×45-30×310+30 ×23 =24-9+20 =35 (3)(38+56+124)×48=48×38+48×56+48× 124 =18+40+2 =60 (4)(56-724+512)×24=24×56-24×724+24 ×512 =20-7+10 =23 (5)(58-716+14)÷132=32×58-32×716+32 ×14 =20-14+8 6II= I×6II= (6+69)×6II=II6÷6+6II×69(8) 8C9= CIGXIIG= (SI8-9I8)×IIS=II9×SI8-II9×SI8(ㄥ) 6t= IX6V= (9IL+9I8)×6=9LL×6+9I8×6(9) 68= 9+6+ζ gIE ×08+0I8×08+Sh×08=08I÷(9I8+0I8+S) bI= OIL= L×0I= (6II+6I8L)×0IL=6L÷0L+0LL×6I8I(II) 9ζ8= I×978= (9II+SIbI)×SZ8=SIbI×Sz8+SI÷Sz8(0I) 8I9= I×8IS= II +gIζI)×8I9=乙I8I÷8I9+gIζI×8I(6) (12)45×344=(44-1)×344 =44×344-344 =3-344 =24244 (13)88×289=(89-1)×289 =89×289-289 =2-289 =18789 (14)32023×2022=(2023-1)×32023 =2023×32023-32023 =3-32023 =220202023 (15)32022×2023=(2022+1)×32022 I+I= (IIL+ IIV)+(L+Lg)=L7+IIL+IIV+Lg (81) 0= 0+0= (69-69) +(IIL-IIL)=69+IIL-69-IIL (LI 0= I-I= (IIㄥ+ IIb)-(6t+69)=IIL-6+IIb-69(9I) ζZ0Z88= Zζ0Z8+8= 乙ζ0Z8+ζζ0Z8×ζζ0Z= =2 (19)1-411-311-411=1-(411+311+ 411) =1-1 =0 (20)(1720×829)×1520=1720×2017×829 =1×829 =829