题目内容
根据乘法算式写出两道除法算式.
×5=
÷
=5,
÷5=
÷
=5,
÷5=
×
=
÷
=
,
÷
=
÷
=
,
÷
=
.
| 7 |
| 10 |
| 7 |
| 2 |
| 7 |
| 2 |
| 7 |
| 10 |
| 7 |
| 2 |
| 7 |
| 10 |
| 7 |
| 2 |
| 7 |
| 10 |
| 7 |
| 2 |
| 7 |
| 10 |
| 3 |
| 8 |
| 2 |
| 3 |
| 1 |
| 4 |
| 1 |
| 4 |
| 3 |
| 8 |
| 2 |
| 3 |
| 1 |
| 4 |
| 2 |
| 3 |
| 3 |
| 8 |
| 1 |
| 4 |
| 3 |
| 8 |
| 2 |
| 3 |
| 1 |
| 4 |
| 2 |
| 3 |
| 3 |
| 8 |
分析:根据在乘法算式中,一个因数=积÷另一个因数,即可把乘法算式改写成两道除法算式.
解答:解:(1)因为
×5=
,
所以
÷
=5,
÷5=
;
(2)因为
×
=
,
所以
÷
=
,
÷
=
.
故答案为:
| 7 |
| 10 |
| 7 |
| 2 |
所以
| 7 |
| 2 |
| 7 |
| 10 |
| 7 |
| 2 |
| 7 |
| 10 |
(2)因为
| 3 |
| 8 |
| 2 |
| 3 |
| 1 |
| 4 |
所以
| 1 |
| 4 |
| 3 |
| 8 |
| 2 |
| 3 |
| 1 |
| 4 |
| 2 |
| 3 |
| 3 |
| 8 |
故答案为:
点评:此题考查乘与除互逆关系的应用,用到的关系式为:一个因数=积÷另一个因数.
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