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