问题 解答题
用递等式计算.
370×203-19266÷3832×3.1+1÷1.25
21
26
×(39÷35)÷0.9
(9-3.06÷
3
5
)×1
3
13
(3-1
1
8
+1
1
7
)×1
8
13
-3
1
56
[(
37
40
+0.075)÷
3
25
-2
17
24
2
15
答案

(1)370×203-19266÷38

=75110-507,

=74603;

(2)32×3.1+1÷1.25

=99.2+0.8,

=100;

(3)
21
26
×(39÷35)÷0.9

=

21
26
×
39
35
÷0.9,

=

9
10
÷0.9,

=1;

(4)(9-3.06÷

3
5
)×1
3
13

=(9-3.06÷

3
5
)×1
3
13

=(9-5.1)×1

3
13

=3.9×1

3
13

=4

4
5

(5)(3-1

1
8
+1
1
7
)×1
8
13
-3
1
56

=(1

7
8
+1
1
7
)×1
8
13
-3
1
56

=3

1
56
×1
8
13
-3
1
56

=3

1
56
×(1
8
13
-1)

=3

1
56
×
8
13

=1

6
7

(6)[(

37
40
+0.075)÷
3
25
-2
17
24
2
15

={1÷

3
25
-2
17
24
2
15

={

25
3
-2
17
24
2
15

=5

5
8
×
2
15

=

3
4

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