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