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