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