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