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