问题 解答题
3
4
+
1
4
=
7.5-(2.5+3.8)=
2
3
+
1
5
=
0.36+1.54=135÷5=2-
1
6
-
5
6
=
1
5
+
5
6
+
4
5
=
1
7
-
1
14
=
1-
1
2
-
1
4
=
17
20
+
3
10
)-(
17
20
-
7
10
)=
5
6
-
4
5
=
答案

3
4
+
1
4
=1,
7.5-(2.5+3.8)=1.2,
2
3
+
1
5
=
13
15
0.36+1.54=1.9,135÷5=27,2-
1
6
-
5
6
=1,
1
5
+
5
6
+
4
5
=1
5
6
1
7
-
1
14
=
1
14
1-
1
2
-
1
4
=
1
4
17
20
+
3
10
)-(
17
20
-
7
10
)=1,
5
6
-
4
5
=
1
30

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单项选择题