题目内容
直接写出得数. = | 8÷= | = | = | = |
= | = | ÷7= | = | = |
解:=0, | 8÷=, | =, | =, | =2, |
=2.5, | =30, | ÷7=, | =, | =5. |
分析:根据乘法交换律简算;分数乘法根据分子相乘的积作为分子,分母相乘的积作为分母进行求解;分数除法根据除以一个数等于乘这个数的倒数求解.
点评:本题考虑基本的分数乘除法运算,计算时要细心,注意把结果化成最简分数.
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题目内容
直接写出得数. = | 8÷= | = | = | = |
= | = | ÷7= | = | = |
解:=0, | 8÷=, | =, | =, | =2, |
=2.5, | =30, | ÷7=, | =, | =5. |