660÷55-120÷24的简便算法
问题描述:
660÷55-120÷24的简便算法
答
660÷55-120÷24
= 6×110÷55 - 240÷24/2
= 6×2 - 10 / 2
= 12 - 5
= 7
答
=11×60÷(11÷5)-5
=60÷5-5
=12-5
=7
答
660÷55-120÷24
=660÷11÷5-120÷12÷2
=60÷5-10÷2
=12-5
=7