¡Practica la suma con tipos de ejercicios mixtos!
- Question 1: blank plus 3 equals 6.
- Question 2: 3 plus 1 equals blank.
- Question 3: blank plus 2 equals 7.
- Question 4: 2 plus 4 equals blank.
- Question 5: 2 plus 1 equals blank.
- Question 6: blank plus 1 equals 6.
