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