3⼀5×0.8+0.6×1⼀5等于多少简便计算?

2025-04-16 08:01:31
推荐回答(2个)
回答1:

3/5Ⅹ0.8+0.6ⅹ1/5
=0.6x0.8+0.6㐅0.2
=(0.8+0.2)ⅹ0.6
=1x0.6
=0.6

回答2:

3/5×0.8+0.6×1/5
=0.6×0.8+0.6×0.2
=0.6×(0.8+0.2)
=0.6×1
=0.6