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