题目内容
[2
+(5.4-3
)×1
]÷3
.
| 1 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 4 |
| 9 |
分析:本题主要运用乘法的分配律及分数小数的四则混合运算进行计算,先算小括号内部的,再算括号外部的,即可求值.
解答:解:[2
+(5.4-3
)×1
]÷3
,
=[2
+5.4×
-
×
]÷
,
=[2
+9-
]×
,
=[
+
-
]×
,
=
×
,
=
.
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 4 |
| 9 |
=[2
| 2 |
| 3 |
| 5 |
| 3 |
| 11 |
| 3 |
| 5 |
| 3 |
| 31 |
| 9 |
=[2
| 2 |
| 3 |
| 55 |
| 9 |
| 9 |
| 31 |
=[
| 24 |
| 9 |
| 81 |
| 9 |
| 55 |
| 9 |
| 9 |
| 31 |
=
| 50 |
| 9 |
| 9 |
| 31 |
=
| 50 |
| 31 |
点评:本题主要考查了分数的四则混合运算及乘法的分配律.
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