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