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