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