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