题目内容
(96
+36
)÷(32
+12
).
| 72 |
| 73 |
| 24 |
| 25 |
| 24 |
| 73 |
| 8 |
| 25 |
分析:32
×3=96
;12
×3=36
,96
+36
=(32
+12
)×3;然后再根据乘法交换律进行计算.
| 24 |
| 73 |
| 72 |
| 73 |
| 8 |
| 25 |
| 24 |
| 25 |
| 72 |
| 73 |
| 24 |
| 25 |
| 24 |
| 73 |
| 8 |
| 25 |
解答:解:(96
+36
)÷(32
+12
),
=(32
+12
)×3÷(32
+12
),
=(32
+12
)÷(32
+12
)×3,
=1×3,
=3.
| 72 |
| 73 |
| 24 |
| 25 |
| 24 |
| 73 |
| 8 |
| 25 |
=(32
| 24 |
| 73 |
| 8 |
| 25 |
| 24 |
| 73 |
| 8 |
| 25 |
=(32
| 24 |
| 73 |
| 8 |
| 25 |
| 24 |
| 73 |
| 8 |
| 25 |
=1×3,
=3.
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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