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