问题 解答题
口算.
4
5
=
11-
4
9
=
1
3
+
1
4
=
1
2
÷3
=
0.125×8=
1
2
×
4
5
=
0.37+1.3=
1
2
÷
1
8
=
4-
7
8
-
1
8
=
2008×99+2008=
答案

4
5
=
5
4
11-
4
9
=10
5
9
1
3
+
1
4
=
7
12
1
2
÷3
=
1
6
0.125×8=1,
1
2
×
4
5
=
2
5
0.37+1.3=1.67,
1
2
÷
1
8
=4,
4-
7
8
-
1
8
=3,
2008×99+2008=200800.

单项选择题
单项选择题