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脱式计算.(能用简便方法计算的要用简便方法计算)(1)7.6×(5.6-435)]÷(3.1−1110(2)[34−(12−13)]÷54÷7(3)(712+524−16)×48(4)237+159−437+549+347(5)257−(57−29)−79(6)(0÷5.87+1×1+7.83

题目详情
脱式计算.(能用简便方法计算的要用简便方法计算)
(1)7.6×(5.6-4
3
5
)]÷(3.1−1
1
10

(2)[
3
4
−(
1
2
1
3
)]÷
5
4
÷7
(3)(
7
12
+
5
24
1
6
)×48
(4)2
3
7
+1
5
9
−4
3
7
+5
4
9
+3
4
7

(5)2
5
7
−(
5
7
2
9
)−
7
9

(6)(0÷5.87+1×1+7.83÷1)÷8.83
(7)0.125×3
3
4
+
1
8
×5.25-12.5%
(8)(7.2+7
1
5
+7.2+7
1
5
)×25%
(9)9999×7+1111×37
(10)
6
7
+9
6
7
+99
6
7
+999
6
7
+9999
6
7

(11)6÷[9+(11-8×0.25)÷1.5]×2
1
2

(12)6666×8+1111×52.
▼优质解答
答案和解析
(1)7.6×(5.6-4
3
5

=7.6×1
=7.6;

(2)[
3
4
−(
1
2
1
3
)]÷
5
4
÷7
=[
3
4
-
1
6
]÷7
=
7
12
×
1
7

=
1
12


(3)(
7
12
+
5
24
1
6
)×48
=
7
12
×48+
5
24
×48-
1
6
×48
=28+10-8
=30;

(4)2
3
7
+1
5
9
−4
3
7
+5
4
9
+3
4
7

=2
3
7
+3
4
7
-4
3
7
+(1
5
9
+5
4
9

=1
4
7
+7
=8
4
7


(5)2
5
7
−(
5
7
2
9
)−
7
9

=2
5
7
-
5
7
+
2
9
-