题目内容
列式计算.
(1)
与
的和除以它们的差,商是多少?
(2)15的
与
除以
的商相加,和是多少?
(1)
| 1 |
| 3 |
| 1 |
| 4 |
(2)15的
| 4 |
| 5 |
| 3 |
| 8 |
| 1 |
| 24 |
(1)(
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 3 |
| 1 |
| 4 |
=
| 7 |
| 12 |
| 1 |
| 12 |
=7.
答:商是7.
(2)15×
| 4 |
| 5 |
| 3 |
| 8 |
| 1 |
| 24 |
=12+9,
=21.
答:和是21.
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| 1 |
| 3 |
| 1 |
| 4 |
| 4 |
| 5 |
| 3 |
| 8 |
| 1 |
| 24 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 3 |
| 1 |
| 4 |
| 7 |
| 12 |
| 1 |
| 12 |
| 4 |
| 5 |
| 3 |
| 8 |
| 1 |
| 24 |