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