题目内容

怎样简便怎样算
3
7
-
3
7
÷3   
1
3
-
1
6
+
1
4
)×12  
11
20
÷[
1
2
×(
2
3
+
4
5
)]
0.625×(8.3-2.5×12%) 
6.8×2.5+2.5×3.2  
7
4
×
5
8
+
1
4
÷
8
5
(1)3÷
3
7
-
3
7
÷3,
=3×
7
3
-
3
7
×
1
3

=7-
1
7

=6
6
7

(2)(
1
3
-
1
6
+
1
4
)×12,
=
1
3
×12-
1
6
×12+
1
4
×12,
=4-2+3,
=5;
(3)
11
20
÷[
1
2
×(
2
3
+
4
5
)],
=
11
20
÷[
1
2
×
2
3
+
1
2
×
4
5
],
=
11
20
÷[
1
3
+
2
5
],
=
11
20
×
15
11

=
3
4

(4)0.625×(8.3-2.5×12%),
=0.625×(8.3-0.3),
=
5
8
×
8,
=5;
(5)6.8×2.5+2.5×3.2,
=(6.8+3.2)×2.5,
=10×2.5,
=25;
(6)
7
4
×
5
8
+
1
4
÷
8
5

=
7
4
×
5
8
+
1
4
×
5
8

=(
7
4
+
1
4
)×
5
8

=
8
4
×
5
8

=
5
4

=1
1
4
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