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