题目内容
简便计算:
×
+
×
.
| 3 |
| 7 |
| 8 |
| 5 |
| 16 |
| 7 |
| 2 |
| 5 |
考点:运算定律与简便运算
专题:运算定律及简算
分析:可根据乘法分配律进行计算.
解答:
解:
×
+
×
=
×(3×
+16×
)
=
×(
+
)
=
×
=
=1
| 3 |
| 7 |
| 8 |
| 5 |
| 16 |
| 7 |
| 2 |
| 5 |
=
| 1 |
| 7 |
| 8 |
| 5 |
| 2 |
| 5 |
=
| 1 |
| 7 |
| 24 |
| 5 |
| 32 |
| 5 |
=
| 1 |
| 7 |
| 56 |
| 5 |
=
| 8 |
| 5 |
=1
| 3 |
| 5 |
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.
练习册系列答案
相关题目