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