问题 解答题
脱式计算,
36×(
2
3
+
1
6
-
3
4
1
3
÷5+
2
3
×
1
5
(
3
4
-
3
16
)×(
2
9
+
1
3
)
25×
37
43
+37×
18
43
15
17
÷
5
8
×
34
39
87×
3
86
答案

(1)36×(

2
3
+
1
6
-
3
4

=36×

2
3
+36×
1
6
-36×
3
4

=24+6-27

=3;

(2)

1
3
÷5+
2
3
×
1
5

=

1
3
×
1
5
+
2
3
×
1
5

=(

1
3
+
2
3
)×
1
5

=1×

1
5

=

1
5

(3)(

3
4
-
3
16
)×(
2
9
+
1
3

=

9
16
×
5
9

=

5
16

(4)25×

37
43
+37×
18
43

=25×

37
43
+18×
37
43

=(25+18)×

37
43

=43×

37
43

=37;

(5)

15
17
÷
5
8
×
34
39

=

15
17
×
8
5
×
34
39

=

16
13

(6)87×

3
86

=(86+1)×

3
86

=86×

3
86
+
3
86

=3+

3
86

=3

3
86

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