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