1.25×0.64×2.5 简便运算

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1.25×0.64×2.5 简便运算

1.25×0.64×2.5 简便运算
1.25×0.64×2.5 简便运算

1.25×0.64×2.5 简便运算
1.25×0.64×2.5
=1.25×0.8×0.8×2.5
=(1.25×0.8)×(0.8×2.5)
=1×2
=2

1.25×0.64×2.5
=1.25×0.8×0.4×2×2,5
=(1.25×0.8)×(0.4×2.5)×2
=1×1×2
=2

1.25×0.64×2.5
=(1.25×0.8)×2×(0.4×2.5)
=1×2×1
=2