题目内容

用自己喜欢的方法计算
1
3
+
1
4
÷
1
24
  
 25×(
9
7
×40%)×
7
9
  
5
8
+
5
7
+
2
5
×
1
4
  
  
1
50
+(1-
2
5
)+
3
20
(1)(
1
3
+
1
4
÷
1
24

=(
1
3
+
1
4
)×24,
=
1
3
×24+
1
4
×24,
=8+6,
=14;

(2)25×(
9
7
×40%)×
7
9

=(25×40%)×(
9
7
×
7
9
),
=10×1,
=10;

(3)
5
8
+
5
7
+
2
5
×
1
4

=
5
8
+
5
7
+
1
10

=
75
56
+
1
10

=
403
280


(4)
1
50
+(1-
2
5
)+
3
20

=
1
50
+
3
5
+
3
20

=
31
50
+
3
20

=
77
100
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