题目内容
| 2 |
| 3 |
| 7 |
| 15 |
| 3 |
| 14 |
分析:先求出
乘
的积,再用
减所得的积即可解答.
| 7 |
| 15 |
| 3 |
| 14 |
| 2 |
| 3 |
解答:解:
-
×
=
-
=
答:差是
.
| 2 |
| 3 |
| 7 |
| 15 |
| 3 |
| 14 |
=
| 2 |
| 3 |
| 1 |
| 10 |
=
| 17 |
| 30 |
答:差是
| 17 |
| 30 |
点评:解答本题的关键是明确计算的顺序,以及计算结果要准确.
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题目内容
| 2 |
| 3 |
| 7 |
| 15 |
| 3 |
| 14 |
| 7 |
| 15 |
| 3 |
| 14 |
| 2 |
| 3 |
| 2 |
| 3 |
| 7 |
| 15 |
| 3 |
| 14 |
| 2 |
| 3 |
| 1 |
| 10 |
| 17 |
| 30 |
| 17 |
| 30 |