Oefen optellen met gemengde oefeningstypes!
- Question 1: blank plus 5 equals 6.
- Question 2: 5 plus 2 equals blank.
- Question 3: 4 plus 3 equals blank.
- Question 4: blank plus 5 equals 9.
- Question 5: blank plus 2 equals 3.
- Question 6: 2 plus 4 equals blank.
