Splits het getal tot 20
Splitspiramide
| Oefening 1 | |||||
|
12
1
|
17
13
|
14
14
|
18
1
|
||
| Oefening 2 | |||||
|
18
17
|
18
17
|
18
14
|
15
3
|
||
| Oefening 3 | |||||
|
11
8
|
14
3
|
4
2
|
19
6
|
||
| Oefening 4 | |||||
|
13
9
|
13
10
|
8
2
|
13
12
|
||