日期:____/____

20以内不退位减法

11-20各数的认识与计算
用时:________
12 - 10 = 2
17 - 10 = 7
17 - 1 = 16
12 - 11 = 1
18 - 7 = 11
16 - 2 = 14
11 - 1 = 10
19 - 11 = 8
18 - 4 = 14
16 - 6 = 10
12 - 1 = 11
16 - 5 = 11
18 - 17 = 1
13 - 11 = 2
17 - 7 = 10
16 - 15 = 1
19 - 13 = 6
13 - 3 = 10
13 - 13 = 0
11 - 10 = 1
12 - 2 = 10
19 - 14 = 5
13 - 2 = 11
16 - 4 = 12