÷4= | + = | ÷ = | × = | 8× = |
2÷ = | 1÷ = | 1- - = | 2- = | 2× × = |
÷4= , | + = , | ÷ =6, | × = , | 8× =6, |
2÷ =4, | 1÷ = , | 1- - = , | 2- =1 , | 2× × = . |
分析:异分母分数相加减,先通分化成同分母的分数,再相加减;
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 09:51:06分类:小学数学题库
÷4= | + = | ÷ = | × = | 8× = |
2÷ = | 1÷ = | 1- - = | 2- = | 2× × = |
÷4= , | + = , | ÷ =6, | × = , | 8× =6, |
2÷ =4, | 1÷ = , | 1- - = , | 2- =1 , | 2× × = . |