Oefen de erafsommen tot 20
Erafsommen
|
1.
10 – 10 =
0
1
3
5
|
2.
2 – 0 =
5
2
3
7
|
3.
12 – 4 =
8
7
11
5
|
4.
2 – 0 =
5
2
7
3
|
|
5.
10 – 0 =
10
3
8
7
|
6.
10 – 9 =
3
1
4
6
|
7.
16 – 5 =
16
6
3
11
|
8.
20 – 0 =
24
20
22
1
|
|
9.
11 – 2 =
11
7
2
9
|
10.
15 – 7 =
5
8
9
3
|
11.
8 – 6 =
5
2
1
3
|
12.
11 – 6 =
2
9
4
5
|
|
13.
8 – 1 =
7
1
3
5
|
14.
18 – 10 =
7
12
11
8
|
15.
13 – 4 =
13
5
9
11
|
16.
13 – 1 =
7
12
17
14
|
|
17.
17 – 15 =
2
3
6
1
|
18.
6 – 5 =
1
4
2
3
|
19.
4 – 3 =
4
6
2
1
|
20.
16 – 1 =
19
14
13
15
|