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