| 直接写出得数. 16× = | × = | × = | ÷ = |
÷ = | 9÷ = | × × = |
| 解: 16× =28, | × = , | × = , | ÷ = , |
÷ = , | 9÷ =12, | × × = . |
分析:分数乘法的计算方法:分母和分母相乘的积做分母,分子和分子相乘的积做分子,能约分的要先约分再计算;
分数除法的方法:除以一个不等于0的数,等于乘这个数的倒数,进而按照分数乘法的计算方法计算得解.
点评:本题考查了基本的分数乘、除法的计算,计算时要细心,注意把结果化成最简分数.
编辑:chaxungu时间:2026-04-27 09:43:44分类:小学数学题库
| 直接写出得数. 16× = | × = | × = | ÷ = |
÷ = | 9÷ = | × × = |
| 解: 16× =28, | × = , | × = , | ÷ = , |
÷ = , | 9÷ =12, | × × = . |