Question

简便运算 1.25*0.25*3232*9.1

Answer 1

1.25*0.25*3232*9.1
＝1.25*4*4*0.25*3232/16*9.1
＝5*1*202*9.1
＝1010*9.1
＝101*91
＝9191

Answer 2

1.25×0.25×3232×9.1
= 1.25×(4×808)×0.25×9.1
= 1.25×808×4×0.25×9.1
＝1.25×800+1.25×8×4×0.25×9.1
＝ 1000+10×1×9.1
＝ 1010×9.1
＝ 1000×9.1+10×9.1
＝ 9100+91
= 9191