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