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