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