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