Multiplying & Dividing Fractions

Front

What is a fraction?

Back

A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

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) x (c/d) = (a*c)/(b*d).

Tags

CCSS.5.NF.B.6

Front

How do you divide fractions?

Back

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

Tags

CCSS.6.NS.A.1

Front

What is an improper fraction?

Back

An improper fraction is a fraction where the numerator is greater than or equal to the denominator, such as 7/4.

Tags

CCSS.3.NF.A.3C

Front

Convert the mixed number 2 2/3 to an improper fraction.

Back

2 2/3 = 8/3.

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 simplify a fraction?

Back

To simplify a fraction, divide the numerator and denominator by their greatest common divisor (GCD).

Front

What is the greatest common divisor (GCD)?

Back

The GCD is the largest number that divides two or more numbers without leaving a remainder.

Front

Solve: 3/4 x 2/5

Back

3/4 x 2/5 = 6/20 = 3/10 after simplification.

Tags

CCSS.5.NF.B.6

Front

Solve: 1/2 ÷ 1/3

Back

1/2 ÷ 1/3 = 1/2 x 3/1 = 3/2.

Tags

CCSS.6.NS.A.1