10÷ = | ÷ = | × = | 55× ÷ = |
×2= | 1÷ = | ÷ = | 0× + = |
解:
10÷ =25, | ÷ = , | × = , | 55× ÷ =40, |
×2= , | 1÷ = , | ÷ = , | 0× + = . |
分析:分数乘法:分子相乘的积做分子,分母相乘的积做分母;
分数除法:除以一个数(0除外)等于乘这个数的倒数.
点评:本题考查了简单的分数计算,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 10:26:33分类:小学数学题库
10÷ = | ÷ = | × = | 55× ÷ = |
×2= | 1÷ = | ÷ = | 0× + = |
解:
10÷ =25, | ÷ = , | × = , | 55× ÷ =40, |
×2= , | 1÷ = , | ÷ = , | 0× + = . |