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