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