¡Practica la suma con tipos de ejercicios mixtos!
- Question 1: 1 plus 4 equals blank.
- Question 2: blank plus 1 equals 2.
- Question 3: blank plus 2 equals 6.
- Question 4: 3 plus 5 equals blank.
- Question 5: 1 plus 2 equals blank.
- Question 6: blank plus 4 equals 9.
