0.125乘以1⼀2加上7⼀8乘以1⼀2加1⼀2用简便方法怎么算

2025-05-17 18:41:25
推荐回答(1个)
回答1:

0.125×1/2+7/8×1/2+1/2
=1/8×1/2+7/8×1/2+1/2
=(1/8+7/8+1)×1/2
=2×1/2
=1