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