题目内容
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
分析:根据题中数据的特点,逆用乘法分配律简算.
解答:解:
×58+
×41+
,
=
×(58+41+1),
=
×100,
=
.
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
=
| 1 |
| 8 |
=
| 1 |
| 8 |
=
| 25 |
| 2 |
点评:此题考查分数的四则混合运算,根据题中数据的特点,灵活运用定律进行简算.
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题目内容
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 25 |
| 2 |