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