题目内容
| 18 |
| 15 |
| 3 |
| 5 |
| 18 |
| 25 |
分析：先运用乘法分配律简算，然后运用加法交换律简算．
解答：解：
×60%+
×1
+0.8×60%，
=
×60%+1
×60%+
×60%，
=（
+1
+
）×60%，
=（
+
+1
）×60%，
=（2+1
）×60%，
=
×
，
=
．
| 18 |
| 15 |
| 3 |
| 5 |
| 18 |
| 25 |
=
| 18 |
| 15 |
| 18 |
| 25 |
| 4 |
| 5 |
=（
| 18 |
| 15 |
| 18 |
| 25 |
| 4 |
| 5 |
=（
| 6 |
| 5 |
| 4 |
| 5 |
| 18 |
| 25 |
=（2+1
| 18 |
| 25 |
=
| 93 |
| 25 |
| 3 |
| 5 |
=
| 279 |
| 125 |
点评：完成本题要注意分析式中数据，运用合适的简便方法计算．
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