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