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