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