12x2.5x4x12.5简便怎么做

2024-12-04 21:24:21
推荐回答(5个)
回答1:

12x2.5x4x12.5
=(2.5x4)x(12.5x8)x1.5
=10x100x1.5 =1500

回答2:

原式=(2.5×4)×(12.5×4)×3
=10×50×3
=500×3
=1500

回答3:

回答4:

回答5:

=(3X4)X2.5x4x12.5=(2.5x4)X(12.5x4)x3=10x50X3=500x3=1500