Oefen optellen met gemengde oefeningstypes!
- Question 1: 5 plus 4 equals blank.
- Question 2: blank plus 1 equals 4.
- Question 3: blank plus 4 equals 7.
- Question 4: blank plus 3 equals 8.
- Question 5: 4 plus 2 equals blank.
- Question 6: blank plus 4 equals 8.
