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