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