Mario ordered a pizza for dinner. When it arrived, Mario quickly ate
of the pizza. While Mario was getting napkins, his pet poodle ate
of the pizza.
Write a numerical expression to show the fraction of the pizza that is left
The numerical expression to show the fraction of the pizza that is left is:
1 - (1/5) - (1/4)
To write a numerical expression to show the fraction of the pizza that is left, we can subtract the fractions that Mario and his pet poodle ate from the whole pizza.
Let's assume the whole pizza is represented by 1 whole or 1/1.
Mario ate 1/4 of the pizza (5/20 in simplified form).
The poodle ate 3/8 of the pizza (15/40 in simplified form).
To find the fraction of the pizza that is left, we subtract the fractions that were eaten: 1/1 - 5/20 - 15/40.
Simplifying the expression, we get:
1/1 - 5/20 - 15/40 = 40/40 - 5/20 - 15/40 = 40/40 - 10/40 - 15/40 = 15/40.
Therefore, the fraction of the pizza that is left is 15/40 or 3/8.
To write a numerical expression to show the fraction of the pizza that is left, we need to subtract the fractions of the pizza that Mario and his pet poodle ate from the total pizza.
Assuming the pizza was whole to start with, we can represent the fraction Mario ate as and the fraction the pet poodle ate as . Therefore, the numerical expression to represent the fraction of the pizza that is left is:
1 - -
Simplifying this expression further, we can subtract the two fractions:
1 - -
To subtract the fractions, we need a common denominator. To find the common denominator, we multiply the denominators of the two fractions:
1 -
Now that we have a common denominator, we can subtract the fractions:
1 -
Finally, we can simplify the expression:
-
So the numerical expression to show the fraction of the pizza that is left is .