问题 解答题
口算.
1
5
=
1
3
4
+0.25
=
42×
1
7
=
0.5-
1
2
=
1
2
-
1
3
=
8
3
=
1
6
×0×2
=
3
8
=
0.125×8=
答案

1
5
=5

1

3
4
+0.25=2

42×

1
7
=6
0.5-
1
2
=0
1
2
-
1
3
=
1
6
8
3
=16
1
6
×0×2
=0
3
8
=0
0.125×8=1.

单项选择题
单项选择题