Oefen optellen met gemengde oefeningstypes!
- Question 1: 2 plus 2 equals blank.
- Question 2: blank plus 5 equals 6.
- Question 3: 4 plus 1 equals blank.
- Question 4: blank plus 3 equals 4.
- Question 5: 1 plus 2 equals blank.
- Question 6: blank plus 5 equals 10.