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