问题 解答题
直接写出得数.
3
8
+
7
8
=
3
7
÷
7
8
=
3-1.95=
1
2
×
2
3
=
6.3÷0.07=
2
3
÷6=
2
15
=
4
5
-
1
7
=
1
2
+3÷
1
4
=
1
4
×
2
7
-0.75×
2
7
=
答案

3
8
+
7
8
=
5
4
3
7
÷
7
8
=
24
49
3-1.95=1.05,
1
2
×
2
3
=
1
3
6.3÷0.07=90,
2
3
÷6=
1
9
2
15
=0,
4
5
-
1
7
=
23
35
1
2
+3÷
1
4
=12
1
2
1
4
×
2
7
-0.75×
2
7
=-
1
7

选择题
单项选择题