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