20× = | ÷ = | × = | + = |
÷6= | ×12= | + = | 6÷ = |
- = | × = | × = | 0÷ = |
20× =8, | ÷ = , | × = , | + = , |
÷6= , | ×12=9, | + = , | 6÷ = , |
- = , | × = , | × = , | 0÷ =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 09:23:50分类:小学数学题库
20× = | ÷ = | × = | + = |
÷6= | ×12= | + = | 6÷ = |
- = | × = | × = | 0÷ = |
20× =8, | ÷ = , | × = , | + = , |
÷6= , | ×12=9, | + = , | 6÷ = , |
- = , | × = , | × = , | 0÷ =0. |