0.25×1.25×22.4简算

分类: 作业答案 • 2022-04-21 12:08:13

问题描述：

0.25×1.25×22.4简算

答

0.25×1.25×22.4
=0.25×1.25×4×5.6
=0.25×1.25×4×8×0.7
=（0.25×4）×（1.25×8）×0.7
=1×10×0.7
=7