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