问题 解答题
口算题.
3
4
×
1
2
=
1
3
×
3
5
=
5
63
×9=
9
17
×
18
37
×0=
1
3
+
1
2
=
1
50
×11=
5-
1
3
-
2
3
=
51
63
×9×7=
答案

3
4
×
1
2
=
3
8
1
3
×
3
5
=
1
5
5
63
×9=
5
7
9
17
×
18
37
×0=0;
1
3
+
1
2
=
5
6
1
50
×11=
11
50
5-
1
3
-
2
3
=4;
51
63
×9×7=51.

单项选择题
单项选择题