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