Question

0.25✘1.25✘0.32的简便方法？

Answer 1

利用特殊等式25×4=100， 125×8=1000简便计算。
0.25×1.25×0.32
=0.25×1.25×0.4×0.8
=(0.25×0.4)×(1.25×0.8)
=0.1×1
=0.1