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