五年级数学上册小数乘法简便运算

五年级数学上册小数乘法简便运算

  • 简介

    (拆分、凑整) 1.25×2.5×32 =(1.25×8)×(2.5×4) =10×10 =100 3.2×0.25×12.5 =(0.25×0.4)×(12.5×8) =0.1×100 =10 0.25×36 =(0.25×4)×9 =1×9 =9 4.8×10.1 =4.8×(10+0.1) =4.8×10+4.8×0.1 =48+0.48 =48.48 0.125×96 =0.125×8×12 =1×12 =12 12.5×88 =12.5×8×11 =100×11 =1100 2.5×440

五年级数学上册小数乘法简便运算