问题 解答题
4
5
+
2
5
=
8
5
÷
4
5
=
3.6×
1
9
=
0.42=70π=
1
6
+
2
3
=
5
8
×0.2=
5
7
×
3
5
=
22=3π=
7
8
-
3
8
=
2
3
×1.5=
0.12=9π=0.5π=
4
5
×
15
16
=
3.5×
5
7
=
202=0.8π=10π=
答案

4
5
+
2
5
=1
1
5
8
5
÷
4
5
=2
3.6×
1
9
=
2
5
0.42=0.1670π=219.8
1
6
+
2
3
=
5
6
5
8
×0.2=
1
8
5
7
×
3
5
=
3
7
22=43π=9.42
7
8
-
3
8
=
1
2
2
3
×1.5=1
0.12=0.019π=28.260.5π=1.57
4
5
×
15
16
=
3
4
3.5×
5
7
=2
1
2
202=4000.8π=2.51210π=31.4

单项选择题
单项选择题