问题 解答题
直接写出计算结果
5
4
=
9
10
÷
19
20
=
7
16
×
8
21
=
1
3
×
1
4
÷
1
3
×
1
4
=
2
3
+
2
3
÷
2
3
-
2
3
=
3.6×
3
4
=
1÷3+
2
3
=
15π=80×(1-60%)=
8
9
×0.1+0.9×
8
9
=
答案

5
4
=10,
9
10
÷
19
20
=
18
19
7
16
×
8
21
=
1
6
1
3
×
1
4
÷
1
3
×
1
4
=
2
3
+
2
3
÷
2
3
-
2
3
=1,
3.6×
3
4
=2.7,
1÷3+
2
3
=1,
15π=47.1,80×(1-60%)=32,
8
9
×0.1+0.9×
8
9
=
8
9

选择题
单项选择题