直接写出得数.
×18= | ÷ = | × = | × = |
1÷9÷ = | ÷ = | 24÷ = | × ÷ × = |
解:
×18=14, | ÷ = , | × = , | × = , |
1÷9÷ =1, | ÷ = , | 24÷ =27, | × ÷ × = . |
故答案为:14,
,
,
,1,
,27,
.
分析:
÷
,
÷
,24÷
根据除以一个数等于乘这个数的倒数求解;1÷9÷
先把除法变成乘法,再按照从左到右的顺序求解;
×
÷
×
先把除法变成乘法,再运用乘法结合律简算;其它题目根据运算法则直接求解.点评:本题考查了基本的分数乘除法计算,计算时能约分的先约分,然后再求解.
×18=
×
=
=