20 以内加法
日期：___________
姓名：___________
用时：___________
成绩：___________
15 + 3 =
2 + 13 =
12 + 0 =
1 + 16 =
12 + 2 =
3 + 17 =
14 + 4 =
8 + 0 =
18 + 2 =
7 + 4 =
9 + 9 =
7 + 12 =
7 + 4 =
6 + 11 =
15 + 2 =
9 + 1 =
12 + 8 =
18 + 1 =
19 + 1 =
6 + 4 =