题目内容
| 1 |
| 7 |
| 6 |
| 11 |
| 5 |
| 11 |
分析:化
÷7为
×
,根据乘法分配律字母表达式:a×c+b×c=(a+b)×c解答.
| 5 |
| 11 |
| 5 |
| 11 |
| 1 |
| 7 |
解答:解:
×
+
÷7,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
.
| 1 |
| 7 |
| 6 |
| 11 |
| 5 |
| 11 |
=
| 1 |
| 7 |
| 6 |
| 11 |
| 5 |
| 11 |
| 1 |
| 7 |
=(
| 6 |
| 11 |
| 5 |
| 11 |
| 1 |
| 7 |
=1×
| 1 |
| 7 |
=
| 1 |
| 7 |
点评:本题主要考查学生正确运用乘法分配律解决问题的能力.
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