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