× = | × = | × = | × = | 5× = |
×21= | × = | × = | × = | × = |
解:
× = , | × = , | × = , | × = , | 5× = , |
×21=3, | × = , | × = , | × = , | × = . |
分析:根据分数乘法的计算法则:分子相乘的积做分子,分母相乘的积做分母进行判断.
点评:本题考查了分数乘法的计算方法,计算时要细心,把结果化成最简分数.
编辑:chaxungu时间:2026-04-27 10:27:01分类:小学数学题库
× = | × = | × = | × = | 5× = |
×21= | × = | × = | × = | × = |
解:
× = , | × = , | × = , | × = , | 5× = , |
×21=3, | × = , | × = , | × = , | × = . |