题目内容
| 1 |
| 2 |
| 3 |
| 5 |
| 2 |
| 5 |
分析:此题应按运算顺序计算,选算乘法,再算加法.
解答:解:
×
+
,
=
+
,
=
.
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| 2 |
| 3 |
| 5 |
| 2 |
| 5 |
=
| 3 |
| 10 |
| 4 |
| 10 |
=
| 7 |
| 10 |
点评:此题容易算成
×1=
,因此应注意运算顺序.
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