题目内容
【题目】计算下列各题,能简算的要简算
×5.16+516%×
(
﹣
)÷(
×
)
×
×
+
+
+6.1
÷(
+
×
)
×(0.65+
)÷
.
【答案】5.16;;
;20;
;
【解析】
试题分析:(1)运用乘法分配律简算;
(2)同时运算两个小括号里面的减法和乘法,再算括号外的除法;
(3)运用乘法结合律简算;
(4)运用加法交换律和加法结合律简算;
(5)先算小括号里面的乘法,再算小括号里面的加法,最后算括号外的除法;
(6)先算小括号里面的加法,再算括号外的乘法,最后算除法.
解:(1)×5.16+516%×
,
=×5.16+5.16×
,
=5.16×(+
),
=5.16×1,
=5.16;
(2)(﹣
)÷(
×
),
=÷
,
=;
(3)×
×
,
=×(
×
),
=×
,
=;
(4)+
+
+6.1,
=(+
)+(6.1+3.9),
=10+10,
=20;
(5)÷(
+
×
),
=÷(
+
),
=÷
,
=;
(6)×(0.65+
)÷
,
=×1÷
,
=×7,
=.
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目