问题 解答题
直接写出得数.
3
8
+
7
8
=
8
9
-
5
9
=
1-
5
6
=
2
3
+
3
4
=
4
5
+
1
4
-
4
5
+
1
4
=
3
8
-
1
4
=
4+
6
7
=
⑧0.52=
9
10
-0.5
=
⑩1+2÷3=
答案

3
8
+
7
8
=
5
4
8
9
-
5
9
=
1
3
1-
5
6
=
1
6
2
3
+
3
4
=
17
12
4
5
+
1
4
-
4
5
+
1
4
=
1
2
3
8
-
1
4
=
1
8
4+
6
7
=4
6
7
⑧0.52=0.25,
9
10
-0.5
=0.4,
⑩1+2÷3=1
2
3

单项选择题
单项选择题