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