Question

0.25x6.4简便计算？

0.25x6.4简便计算

Answer 1

0.25x6.4简便计算：

0.25x6.4
=0.25x4×1.6
=1×1.6
=1.6

Answer 2

0.25×6.4
=0.25×4×1.6
=1×1.6
=1.6
这道题主要是观察数的特征，因为25×4=100.所以要把6.4拆出4×1.6

Answer 3

0.25×6.4
=0.25×4×1.6
=1×1.6
=1.6

Answer 4

0.25乘6.4乘4