题目内容
(5
-3
)÷2.5+2
.
| 5 |
| 12 |
| 17 |
| 36 |
| 5 |
| 6 |
分析:本题根据四则混合运算的运算顺序计算即可:先算乘除,再算加减,有括号的要先算括号里面的.括号内的带分数可先将整除部分相减后再计算.
解答:解:(5
-3
)÷2.5+2
=(5-3-
+
)÷
+
,
=(1
+
)×
+
,
=
×
+
,
=
+
,
=
.
| 5 |
| 12 |
| 17 |
| 36 |
| 5 |
| 6 |
=(5-3-
| 17 |
| 36 |
| 5 |
| 12 |
| 5 |
| 2 |
| 17 |
| 6 |
=(1
| 19 |
| 36 |
| 5 |
| 12 |
| 2 |
| 5 |
| 17 |
| 6 |
=
| 35 |
| 18 |
| 2 |
| 5 |
| 17 |
| 6 |
=
| 7 |
| 9 |
| 17 |
| 6 |
=
| 65 |
| 18 |
点评:完成此类含有分数值较大且不能运用简便方法计算的题目要细心,注意通分、约分.
练习册系列答案
相关题目