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