题目内容
[4
+(5.4-
)÷7]×
.
| 3 |
| 5 |
| 1 |
| 2 |
| 10 |
| 11 |
分析:先计算小括号内部的,在计算中括号内部的,在计算括号外面的,认真计算,求得正确答案.
解答:解:[4
+(5.4-
)÷7]×
,
=[4
+4.9÷7]×
,
=[4.6+0.7]×
,
=5.3×
,
=
,
=4
.
| 3 |
| 5 |
| 1 |
| 2 |
| 10 |
| 11 |
=[4
| 3 |
| 5 |
| 10 |
| 11 |
=[4.6+0.7]×
| 10 |
| 11 |
=5.3×
| 10 |
| 11 |
=
| 53 |
| 11 |
=4
| 9 |
| 11 |
点评:本题确定正确的运算顺序,运用分数的乘除法的计算法则认真解答.
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