题目内容
| 2 |
| 17 |
| 2 |
| 17 |
| 2 |
| 17 |
| 2 |
| 17 |
| 6 |
| 17 |
| 2 |
| 17 |
| 2 |
| 17 |
7
7
.分析:
里面有3个
,把
分解成
+
+
,再根据乘法的意义,写出乘法算式.
| 6 |
| 17 |
| 2 |
| 17 |
| 6 |
| 17 |
| 2 |
| 17 |
| 2 |
| 17 |
| 2 |
| 17 |
解答:解:
+
+
+
+
,
=
+
+
+
+
+
+
,
=
×7.
故答案为:
,7.
| 2 |
| 17 |
| 2 |
| 17 |
| 2 |
| 17 |
| 2 |
| 17 |
| 6 |
| 17 |
=
| 2 |
| 17 |
| 2 |
| 17 |
| 2 |
| 17 |
| 2 |
| 17 |
| 2 |
| 17 |
| 2 |
| 17 |
| 2 |
| 17 |
=
| 2 |
| 17 |
故答案为:
| 2 |
| 17 |
点评:本题考查了乘法的意义:求几个相同加数和的简便运算.
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