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