Multiplying and Dividing Fractions Word Problems

Front

What is a fraction?

Back

A fraction represents a part of a whole and is written as 'a/b', where 'a' is the numerator (the number of parts) and 'b' is the denominator (the total number of equal parts).

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

How do you multiply fractions?

Back

To multiply fractions, multiply the numerators together and the denominators together. For example, (a/b) * (c/d) = (a*c)/(b*d).

Tags

CCSS.5.NF.B.6

Front

What is the reciprocal of a fraction?

Back

The reciprocal of a fraction is obtained by flipping the numerator and denominator. For example, the reciprocal of 3/4 is 4/3.

Front

How do you divide fractions?

Back

To divide fractions, multiply by the reciprocal of the second fraction. For example, (a/b) ÷ (c/d) = (a/b) * (d/c).

Tags

CCSS.6.NS.A.1

Front

What does it mean to solve a word problem involving fractions?

Back

It means to translate the situation described in the problem into a mathematical expression or equation involving fractions and then solve it.

Tags

CCSS.7.NS.A.3

Front

If Keisha needs 1/2 of a potato per guest for 9 guests, how many potatoes does she need?

Back

4 1/2 potatoes.

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

If Deandre has 8 pints of milk and drinks 1/4 pint each day, how long will it last?

Back

32 days.

Front

If 1/3 of a pizza remains and Rachel eats 1/2 of it, what fraction of the pizza does she eat?

Back

1/6 of a pizza.

Tags

CCSS.5.NF.B.6

Front

What operation do you use to find out how much of a whole is eaten when given a fraction of a fraction?

Back

Multiply.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

If Mr. Simpson feeds his dog 1/2 cup of food each day, how long will 4 cups last?

Back

8 days.