Subtracting Fractions with unlike denominators

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

What does it mean to subtract fractions with unlike denominators?

Back

Subtracting fractions with unlike denominators involves finding a common denominator before performing the subtraction.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you find a common denominator for two fractions?

Back

To find a common denominator, identify the least common multiple (LCM) of the two denominators.

Front

What is the least common multiple (LCM)?

Back

The least common multiple is the smallest multiple that two or more numbers share.

Front

How do you convert fractions to have a common denominator?

Back

Multiply the numerator and denominator of each fraction by the necessary factor to reach the common denominator.

Front

What is the process for subtracting fractions?

Back

1. Find a common denominator. 2. Convert each fraction. 3. Subtract the numerators. 4. Simplify the result if possible.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the simplified form of a fraction?

Back

The simplified form of a fraction is when the numerator and denominator have no common factors other than 1.

Front

How do you simplify a fraction?

Back

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

Front

What is the greatest common divisor (GCD)?

Back

The greatest common divisor is the largest number that divides both the numerator and denominator without leaving a remainder.

Front

What is the result of 4/5 - 2/3?

Back

The result is 2/15 after finding a common denominator and performing the subtraction.

Tags

CCSS.7.NS.A.1C