题目内容
35×
+35×
+35×
.
| 7 |
| 10 |
| 1 |
| 5 |
| 1 |
| 2 |
分析:通过观察,根据数字特点,此题可运用乘法分配律简算.
解答:解:35×
+35×
+35×
,
=35×(
+
+
),
=35×
,
=49.
| 7 |
| 10 |
| 1 |
| 5 |
| 1 |
| 2 |
=35×(
| 7 |
| 10 |
| 1 |
| 5 |
| 1 |
| 2 |
=35×
| 7 |
| 5 |
=49.
点评:认真分析数据,运用运算定律灵活简算.
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