题目内容
| 1 |
| 5 |
| 2 |
| 7 |
| 3 |
| 12 |
| 1 |
| 4 |
×
×
.(判断对错)分析:按照从左到右的顺序计算出结果,再用
比较.
| 1 |
| 4 |
解答:解:
+
-
=
+
-
=
-
=
;
≠
.
故答案为:×.
| 1 |
| 5 |
| 2 |
| 7 |
| 3 |
| 12 |
=
| 7 |
| 35 |
| 10 |
| 35 |
| 1 |
| 4 |
=
| 17 |
| 35 |
| 1 |
| 4 |
=
| 33 |
| 140 |
| 33 |
| 140 |
| 1 |
| 4 |
故答案为:×.
点评:解决本题关键是正确的计算出算式的结果.
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