简便计算0.8×4×1.25×2.5=

问题描述:

简便计算0.8×4×1.25×2.5=

0.8×4×1.25×2.5=(0.8×1.25)×(4×2.5)
=1×10
=10

(0.8*1.25)*(4*2.5)
=1*10
=10

0.8×4×1.25×2.5
=(0.8*1.25)*(2.5*4)
=1*10
=10

0.8×4×1.25×2.5
=0.8×1.25×4x2.5
=1x10
=10