题目内容
| 3 |
| 10 |
| 5 |
| 7 |
| 10 |
| 21 |
分析:按照先算括号里面的减法,再算括号外面的乘法顺序即可解答.
解答:解:
×(
-
)
=
×
=
.
| 3 |
| 10 |
| 5 |
| 7 |
| 10 |
| 21 |
=
| 3 |
| 10 |
| 5 |
| 21 |
=
| 1 |
| 14 |
点评:本题主要考查学生依据四则运算顺序正确进行计算的能力,关键是计算结果要准确.
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题目内容
| 3 |
| 10 |
| 5 |
| 7 |
| 10 |
| 21 |
| 3 |
| 10 |
| 5 |
| 7 |
| 10 |
| 21 |
| 3 |
| 10 |
| 5 |
| 21 |
| 1 |
| 14 |