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能简则简细又巧2480-480÷40×25;79÷115+29×511;(23-25+56)÷130.

题目详情
能简则简细又巧
2480-480÷40×25;      
7
9
÷
11
5
+
2
9
×
5
11
;         (
2
3
-
2
5
+
5
6
)÷
1
30

7
9
÷
11
5
+
2
9
×
5
11
;         (
2
3
-
2
5
+
5
6
)÷
1
30
7
9
797799
11
5
+
2
9
×
5
11
;         (
2
3
-
2
5
+
5
6
)÷
1
30
11
5
115111155
2
9
×
5
11
;         (
2
3
-
2
5
+
5
6
)÷
1
30
2
9
292299
5
11
;         (
2
3
-
2
5
+
5
6
)÷
1
30
5
11
511551111
2
3
-
2
5
+
5
6
)÷
1
30
2
3
232233
2
5
+
5
6
)÷
1
30
2
5
252255
5
6
)÷
1
30
5
6
565566
1
30
1
30
130113030
▼优质解答
答案和解析
(1)2480-480÷40×25
=2480-12×25
=2480-300
=2180;

(2)
7
9
÷
11
5
+
2
9
×
5
11

=
7
9
×
5
11
+
2
9
×
5
11

=(
7
9
+
2
9
)×
5
11

=1×
5
11

=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
7
9
79777999÷
11
5
+
2
9
×
5
11

=
7
9
×
5
11
+
2
9
×
5
11

=(
7
9
+
2
9
)×
5
11

=1×
5
11

=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
11
5
115111111555+
2
9
×
5
11

=
7
9
×
5
11
+
2
9
×
5
11

=(
7
9
+
2
9
)×
5
11

=1×
5
11

=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
2
9
29222999×
5
11

=
7
9
×
5
11
+
2
9
×
5
11

=(
7
9
+
2
9
)×
5
11

=1×
5
11

=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
5
11
511555111111
=
7
9
×
5
11
+
2
9
×
5
11

=(
7
9
+
2
9
)×
5
11

=1×
5
11

=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
7
9
79777999×
5
11
+
2
9
×
5
11

=(
7
9
+
2
9
)×
5
11

=1×
5
11

=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
5
11
511555111111+
2
9
×
5
11

=(
7
9
+
2
9
)×
5
11

=1×
5
11

=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
2
9
29222999×
5
11

=(
7
9
+
2
9
)×
5
11

=1×
5
11

=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
5
11
511555111111
=(
7
9
+
2
9
)×
5
11

=1×
5
11

=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
7
9
79777999+
2
9
)×
5
11

=1×
5
11

=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
2
9
29222999)×
5
11

=1×
5
11

=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
5
11
511555111111
=1×
5
11

=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
5
11
511555111111
=
5
11


(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
5
11
511555111111;

(3)(
2
3
-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
2
3
23222333-
2
5
+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
2
5
25222555+
5
6
)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
5
6
56555666)÷
1
30

=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
1
30
130111303030
=(
2
3
-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
2
3
23222333-
2
5
+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
2
5
25222555+
5
6
)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
5
6
56555666)×30
=
2
3
×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
2
3
23222333×30-
2
5
×30+
5
6
×30
=20-12+25
=33.
2
5
25222555×30+
5
6
×30
=20-12+25
=33.
5
6
56555666×30
=20-12+25
=33.