Erafsommen tot 20
Erafsommen
|
1.
9 – 0 =
9
7
|
2.
17 – 0 =
17
7
|
3.
9 – 6 =
6
3
|
4.
19 – 5 =
18
14
|
|
5.
19 – 6 =
13
5
|
6.
19 – 2 =
17
15
|
7.
10 – 5 =
5
9
|
8.
16 – 8 =
8
1
|
|
9.
1 – 0 =
1
5
|
10.
4 – 0 =
4
8
|
11.
15 – 12 =
3
8
|
12.
20 – 6 =
12
14
|
|
13.
2 – 2 =
1
0
|
14.
3 – 1 =
3
2
|
15.
4 – 1 =
1
3
|
16.
8 – 1 =
1
7
|
|
17.
5 – 2 =
5
3
|
18.
3 – 1 =
3
2
|
19.
11 – 6 =
3
5
|
20.
19 – 3 =
21
16
|