题目内容
| 7 |
| 11 |
| 7 |
| 11 |
分析:
×10+
,运用乘法分配律进行简算.
| 7 |
| 11 |
| 7 |
| 11 |
解答:解:
×10+
,
=
×(10+1),
=
×11,
=7.
故选:C.
| 7 |
| 11 |
| 7 |
| 11 |
=
| 7 |
| 11 |
=
| 7 |
| 11 |
=7.
故选:C.
点评:此题考查的目的是理解乘法分配律的意义,ab+bc=(a+b)×c,能够灵活运用乘法分配律进行简便计算.
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| 7 |
| 11 |
| 7 |
| 11 |
| 7 |
| 11 |
| 7 |
| 11 |
| 7 |
| 11 |
| 7 |
| 11 |
| 7 |
| 11 |
| 7 |
| 11 |