题目内容
(2012?武汉模拟)计算:
×23
+16×
+
×
=
| 4 |
| 7 |
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
16
16
.分析:利用整数的乘法分配律即可作答.
解答:解:
×23
+16×
+
×
,
=
×(23
+4+
),
=
×28,
=16.
故答案为:16.
| 4 |
| 7 |
| 12 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=
| 4 |
| 7 |
| 12 |
| 13 |
| 1 |
| 13 |
=
| 4 |
| 7 |
=16.
故答案为:16.
点评:此题主要考查分数的巧算,关键是灵活运用乘法分配律.
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