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