列式计算 1⼀2与1⼀3的和除以它们的差,商是多少? 比3⼀10米长1⼀7米是多少米?

2024-11-22 23:24:51
推荐回答(3个)
回答1:

采纳吧

回答2:

(1/2+1/3)÷(1/2-1/3)
=5/6÷1/6
=5

3/10+1/7=21/70+10/70=31/70米

4/29*(3/5-3/10)
=4/29*3/10
=6/145

回答3:

1/2+1/3=5/6 1/2-1/3=1/6 商=5/6÷1/6=5
3/10+1/7=31/70 4/29×(3/5-3/10)=6/145