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