题目内容

直接写出得数.
1
2
-
1
3
=
7
12
+
1
6
=
2-
2
7
=
0.25+
1
4
=
5
8
×
4
15
=
7
20
÷
3
10
=
12÷
2
15
=
5
6
×18=
1
2
-
1
3
=
1
6
7
12
+
1
6
=
3
4
2-
2
7
=1
5
7
0.25+
1
4
=0.5
5
8
×
4
15
=
1
6
7
20
÷
3
10
=1
1
6
12÷
2
15
=90
5
6
×18=15
故答案为:
1
6
3
4
1
5
7
,0.5,
1
6
1
1
6
,,90,15.
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