问题 解答题
用递等式计算
3
7
÷(
7
10
-
1
6
0.8×(3.75-0.3)÷0.1
2
3
-
5
3
×
3
8
)÷
7
16
17
19
÷(
1
4
+
2
7
×
7
8
答案

(1)

3
7
÷(
7
10
-
1
6
),

=

3
7
÷
16
30

=

3
7
×
30
16

=

45
56

(2)0.8×(3.75-0.3)÷0.1,

=0.8×3.45÷0.1,

=2.76÷0.1,

=27.6;

(3)(

2
3
-
5
3
×
3
8
)÷
7
16

=(

2
3
-
5
8
)÷
7
16

=

1
24
÷
7
16

=

2
21

(4)

17
19
÷(
1
4
+
2
7
×
7
8
),

=

17
19
÷(
1
4
+
1
4
),

=

17
19
÷
1
2

=

34
19

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