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