= | = | = | = | = |
= | = | = | 100× = | ( )×0= |
=5, | = , | =21, | = , | =4, |
= , | = , | = , | 100× =32, | ( )×0=0. |
,21,
,4,
,
,
,32,0.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:除以一个数等于乘这个数的倒数;由此求解.
点评:本题考查了简单的分数乘除法,计算时要细心,把结果化成最简分数.
编辑:chaxungu时间:2026-04-27 11:43:40分类:小学数学题库
= | = | = | = | = |
= | = | = | 100× = | ( )×0= |
=5, | = , | =21, | = , | =4, |
= , | = , | = , | 100× =32, | ( )×0=0. |
,21,
,4,
,
,
,32,0.