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