Erafsommen tot 20
Erafsommen
|
1.
13 – 12 =
2
1
|
2.
13 – 3 =
10
4
|
3.
8 – 4 =
4
9
|
4.
13 – 0 =
18
13
|
|
5.
15 – 9 =
6
4
|
6.
10 – 0 =
10
8
|
7.
16 – 13 =
3
1
|
8.
19 – 7 =
12
5
|
|
9.
3 – 0 =
5
3
|
10.
18 – 10 =
10
8
|
11.
13 – 5 =
8
2
|
12.
17 – 3 =
14
7
|
|
13.
15 – 7 =
8
1
|
14.
11 – 9 =
3
2
|
15.
14 – 14 =
0
5
|
16.
11 – 4 =
7
6
|
|
17.
14 – 13 =
4
1
|
18.
7 – 5 =
4
2
|
19.
16 – 1 =
15
2
|
20.
9 – 8 =
5
1
|