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