题目内容
(5
-3
)÷2
+
×2
.
| 5 |
| 12 |
| 17 |
| 36 |
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 9 |
分析:此题应按运算顺序,先算括号内的减法和括号外的乘法,再算括号外的除法,最后算加法.
解答:解:(5
-3
)÷2
+
×2
,
=(5
-3
)×
+
×
,
=
×
+
,
=
+
,
=
.
| 5 |
| 12 |
| 17 |
| 36 |
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 9 |
=(5
| 15 |
| 36 |
| 17 |
| 36 |
| 2 |
| 5 |
| 2 |
| 3 |
| 19 |
| 9 |
=
| 35 |
| 18 |
| 2 |
| 5 |
| 38 |
| 27 |
=
| 7 |
| 9 |
| 38 |
| 27 |
=
| 59 |
| 27 |
点评:此题重点考查分数四则混合运算的顺序,以及计算能力.
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