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