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