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