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