Oefen de erafsommen tot 20
Erafsommen
|
1.
2 – 0 =
5
2
7
3
|
2.
14 – 1 =
13
12
16
9
|
3.
15 – 9 =
6
11
3
5
|
4.
5 – 3 =
3
5
6
2
|
|
5.
20 – 14 =
11
8
6
7
|
6.
19 – 0 =
16
19
1
23
|
7.
3 – 1 =
2
3
6
1
|
8.
13 – 6 =
2
8
7
6
|
|
9.
20 – 12 =
13
4
12
8
|
10.
5 – 0 =
8
5
9
6
|
11.
19 – 10 =
3
9
1
2
|
12.
14 – 7 =
5
6
8
7
|
|
13.
17 – 6 =
11
4
9
1
|
14.
8 – 3 =
3
5
7
2
|
15.
2 – 2 =
0
3
1
4
|
16.
17 – 3 =
11
13
14
10
|
|
17.
14 – 5 =
3
14
9
11
|
18.
13 – 0 =
8
15
18
13
|
19.
4 – 1 =
2
3
4
1
|
20.
18 – 4 =
14
7
10
12
|