0.61乘0.25加0.18乘0.25加0.21乘百分之25 减算,

分类: 作业答案 • 2022-01-09 18:01:21

问题描述：

0.61乘0.25加0.18乘0.25加0.21乘百分之25 减算,
0.61乘0.25加0.18乘0.25加0.21乘百分之25 减算,

答

0.25×(0.61+0.18+0.21)
=0.25×1
=0.25