题目内容
列式计算.
(1)
与
的积的倒数是多少?
(2)
的倒数与
的7倍的差是多少?
(1)
| 3 |
| 5 |
| 7 |
| 2 |
(2)
| 1 |
| 8 |
| 1 |
| 3 |
(1)1÷(
| 3 |
| 5 |
| 7 |
| 2 |
=1÷
| 21 |
| 10 |
=
| 10 |
| 21 |
答:是
| 10 |
| 21 |
(2)1÷
| 1 |
| 8 |
| 1 |
| 3 |
=8-
| 7 |
| 3 |
=5
| 2 |
| 3 |
答:差是5
| 2 |
| 3 |
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题目内容
| 3 |
| 5 |
| 7 |
| 2 |
| 1 |
| 8 |
| 1 |
| 3 |
| 3 |
| 5 |
| 7 |
| 2 |
| 21 |
| 10 |
| 10 |
| 21 |
| 10 |
| 21 |
| 1 |
| 8 |
| 1 |
| 3 |
| 7 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |