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