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