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(1)1÷0.8=(2)320÷75%=(3)45×8÷45=(4)34-712=(5)720+(814-635)÷234=(6)(15+13-16)×30=(7)[710-(12+25×50%)]÷167=(8)1637-(225+337)=(9)10÷[83-(513÷526+25)]=(10)35×(17+821
题目详情
(1)1÷0.8= | (2)
| ||||||||||||||||
(3)
| (4)
| ||||||||||||||||
(5)
| (6)(
| ||||||||||||||||
(7)[
| (8)16
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(9)10÷[
| (10)
|
▼优质解答
答案和解析
(1)1÷0.8=1.25;
(2)
÷75%=
;
(3)
×8÷
,
=
÷
×8,
=1×8,
=8;
(4)
-
,
=
-
,
=
;
(5)
+(8
-6
)÷2
,
=
+1
÷2
,
=
+
,
=
;
(6)(
+
-
)×30,
=
×30+
×30-
×30,
=6+10-5,
=16-5,
=11;
(7)[
-(
+
×50%)]÷
,
=[
-(
+
)]÷
,
=[
-
]÷
,
=0÷
,
=0;
(8)16
-(2
+3
),
=16
-2
-3
,
=16
-3
-2
,
=13-2
,
=10
;
(9)10÷[
-(
÷
+
)],
=10÷[
-(2+
)],
=10÷[
-2
],
=10÷
,
=
;
(10)
×(
+
÷
),
=
×(
+
),
=
×
,
=
(1)1÷0.8=1.25;
(2)
3 |
20 |
1 |
5 |
(3)
4 |
5 |
4 |
5 |
=
4 |
5 |
4 |
5 |
=1×8,
=8;
(4)
3 |
4 |
7 |
12 |
=
9 |
12 |
7 |
12 |
=
1 |
6 |
(5)
7 |
20 |
1 |
4 |
3 |
5 |
3 |
4 |
=
7 |
20 |
13 |
20 |
3 |
4 |
=
7 |
20 |
3 |
5 |
=
19 |
20 |
(6)(
1 |
5 |
1 |
3 |
1 |
6 |
=
1 |
5 |
1 |
3 |
1 |
6 |
=6+10-5,
=16-5,
=11;
(7)[
7 |
10 |
1 |
2 |
2 |
5 |
16 |
7 |
=[
7 |
10 |
1 |
2 |
1 |
5 |
16 |
7 |
=[
7 |
10 |
7 |
10 |
16 |
7 |
=0÷
16 |
7 |
=0;
(8)16
3 |
7 |
2 |
5 |
3 |
7 |
=16
3 |
7 |
2 |
5 |
3 |
7 |
=16
3 |
7 |
3 |
7 |
2 |
5 |
=13-2
2 |
5 |
=10
3 |
5 |
(9)10÷[
8 |
3 |
5 |
13 |
5 |
26 |
2 |
5 |
=10÷[
8 |
3 |
2 |
5 |
=10÷[
8 |
3 |
2 |
5 |
=10÷
4 |
15 |
=
75 |
2 |
(10)
3 |
5 |
1 |
7 |
8 |
21 |
2 |
3 |
=
3 |
5 |
1 |
7 |
4 |
7 |
=
3 |
5 |
5 |
7 |
=
3 |
7 |
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