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