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