计算: - = | 18× = | = | = |
×12= | ÷2= | + = | - = |
- = , | 18× =15, | = , | = , |
×12=9, | ÷2= , | + = , | - = . |
,15,
,
,9,
,
,
.分析:根据分数加减法、乘除法的计算法则求解.
点评:本题考查了分数的计算,计算时要细心,把结果化成最简分数.
编辑:chaxungu时间:2026-04-27 09:06:22分类:小学数学题库
计算: - = | 18× = | = | = |
×12= | ÷2= | + = | - = |
- = , | 18× =15, | = , | = , |
×12=9, | ÷2= , | + = , | - = . |
,15,
,
,9,
,
,
.