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