3⼀5×0.8+0.6×1⼀5怎么简便热量计算?

2025-04-24 20:32:53
推荐回答(4个)
回答1:

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

回答2:

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

回答3:

3/5x0.8+0.6x1/5
=3/5X4/5+3/5x1/5
=(4/5+1/5)X3/5
=3/5

回答4:

=1/5×0.8×3+0.6×1/5
=1/5×(2.4+0.6)
=3/5