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