摘要：5．384÷12+23×371

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56+37-80+16= 31.5+5= 12-1.1= 1.2×0.2=
2.87÷0.7= 1÷
4
5
=
1
6
+
5
6
=
7
15
-
1
15
=
4
15
÷
2
5
=
3
8
×
4
5
=		 30÷50= 0×
7
8
=
25×8=
1
4
+
1
5
=		 12×
2
3
=
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直接写得数．
2
3
×
6
7
=
4
5
+
1
10
=
4
9
-
1
3
=
2
5
+
1
2
=
3
7
×
1
6
=
1
2
÷
2
3
=
9
10
-
2
5
=
3
4
×
2
3
=
14×
2
21
=		 20÷
4
9
=		 0×
2
5
=
2
23
×23×1=
 查看习题详情和答案>>
解方程．
1
2
+χ=
3
4
               
χ-
3
7
=
1
2
               
χ+
2
3
=
7
6
．
 查看习题详情和答案>>
直接写得数．
4
5
×2=
2
3
÷
3
7
×0=
6
7
÷
1
2
=		 8÷
4
5
×2=
（1-
1
3
）÷
2
3
=
4
35
×
21
32
=
3
7
×6+
3
7
=
9
20
÷
3
20
×
1
3
=
 查看习题详情和答案>>
直接写得数
1
3
×0=
1
4
×
2
5
=
5
6
×12=
7
12
×
3
14
=
1
7
×14=
8
9
×
3
8
=
3
10
×
10
3
=		 9×
7
18
=
2
3
×
9
10
=
1
2
÷
2
3
=
1
5
+
4
5
=
3
4
-
1
4
=
2
5
×2=
3
7
×
1
3
=		 12÷
3
4
=
5
9
×
3
5
=
 查看习题详情和答案>>

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