adding and subtraction fractions (PRE)

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).

Front

What does it mean to add fractions with different denominators?

Back

To add fractions with different denominators, you must first find a common denominator, convert the fractions, and then add the numerators.

Front

How do you find a common denominator for 1/3 and 4/7?

Back

The least common multiple (LCM) of the denominators (3 and 7) is 21. Convert both fractions to have a denominator of 21.

Front

What is the sum of 1/3 and 4/7?

Back

1/3 + 4/7 = 19/21 after finding a common denominator and adding the fractions.

Front

What is the process to add 1/8 and 5/16?

Back

Find a common denominator (16), convert 1/8 to 2/16, then add: 2/16 + 5/16 = 7/16.

Front

What does it mean to reduce a fraction to its simplest form?

Back

Reducing a fraction means dividing the numerator and denominator by their greatest common factor (GCF) to simplify it.

Front

What is the sum of 5/12 and 2/3?

Back

5/12 + 2/3 = 13/12 after converting 2/3 to 8/12 and adding.

Front

How do you subtract fractions with different denominators?

Back

Find a common denominator, convert the fractions, and then subtract the numerators.

Front

What is the difference between 3/5 and 1/3?

Back

3/5 - 1/3 = 4/15 after finding a common denominator (15) and subtracting.

Front

What is the difference between 3/4 and 1/3?

Back

3/4 - 1/3 = 5/12 after finding a common denominator (12) and subtracting.