¡Practica la suma con tipos de ejercicios mixtos!
- Question 1: blank plus 2 equals 4.
- Question 2: 2 plus 4 equals blank.
- Question 3: 3 plus 2 equals blank.
- Question 4: blank plus 3 equals 8.
- Question 5: blank plus 1 equals 3.
- Question 6: 3 plus 4 equals blank.
