7⼀8÷2⼀5+2点5×1⼀8的简便计算

2025-03-18 20:39:43
推荐回答(2个)
回答1:

7/8÷2/5+2.5×1/8
=7/8×5/2+2.5×1/8
=7/8×2.5+2.5×1/8
=2.5×(1/8+7/8)
=2.5×1
=2.5

回答2:


如图