题目内容
脱式计算.
8÷(1-0.96)×0.06×8.41
×[(
+
)÷
]
(
×7-
)÷
[1-(
-
)]×
.
8÷(1-0.96)×0.06×8.41
5 |
6 |
2 |
5 |
2 |
3 |
5 |
6 |
(
9 |
35 |
3 |
5 |
3 |
4 |
[1-(
3 |
8 |
3 |
8 |
4 |
25 |
分析:(1)先算括号内的,再按运算顺序从左往右依次计算;
(2)先算小括号内的,再算中括号内的,最后算括号外的;
(3)先算括号内的乘法,再算括号内的减法,最后算括号外的;
(4)小括号内的结果为0,因此原式变成1×
,计算即可.
(2)先算小括号内的,再算中括号内的,最后算括号外的;
(3)先算括号内的乘法,再算括号内的减法,最后算括号外的;
(4)小括号内的结果为0,因此原式变成1×
4 |
25 |
解答:解:(1)8÷(1-0.96)×0.06×8.41,
=8÷0.04×0.06×8.41,
=200×0.06×8.41,
=12×8.41,
=100.92;
(2)
×[(
+
)÷
],
=
×[
×
],
=
×
×
,
=
;
(3)(
×7-
)÷
,
=(
-
)÷
,
=
×
,
=
;
(4)[1-(
-
)]×
,
=[1-0]×
,
=1×
,
=
.
=8÷0.04×0.06×8.41,
=200×0.06×8.41,
=12×8.41,
=100.92;
(2)
5 |
6 |
2 |
5 |
2 |
3 |
5 |
6 |
=
5 |
6 |
16 |
15 |
6 |
5 |
=
5 |
6 |
16 |
15 |
6 |
5 |
=
16 |
15 |
(3)(
9 |
35 |
3 |
5 |
3 |
4 |
=(
9 |
5 |
3 |
5 |
3 |
4 |
=
6 |
5 |
4 |
3 |
=
8 |
5 |
(4)[1-(
3 |
8 |
3 |
8 |
4 |
25 |
=[1-0]×
4 |
25 |
=1×
4 |
25 |
=
4 |
25 |
点评:脱式计算,特别注意运算顺序与运算法则.
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