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