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