Oefen optellen met gemengde oefeningstypes!
- Question 1: blank plus 2 equals 5.
- Question 2: 4 plus 5 equals blank.
- Question 3: 1 plus 2 equals blank.
- Question 4: blank plus 3 equals 5.
- Question 5: blank plus 5 equals 8.
- Question 6: 5 plus 5 equals blank.
