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