Adding and Subtracting Fractions

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).

Front

What does it mean to add fractions?

Back

Adding fractions means combining the parts represented by the fractions. To add fractions with the same denominator, add the numerators and keep the denominator the same.

Front

What is the simplest form of a fraction?

Back

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

Front

How do you find a common denominator?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators of the fractions you want to add or subtract.

Front

What is the process for subtracting fractions?

Back

To subtract fractions, make sure they have the same denominator, then subtract the numerators and keep the denominator the same.

Front

What is 40/100 + 20/100 in simplest form?

Back

3/5

Front

A landscape company has 2/9 ton of gravel and 7/9 ton of sand. How much more sand do they have than gravel?

Back

5/9 ton

Front

Lina worked on math homework for 6/10 of an hour before school and 3/10 of an hour after school. How long did she spend doing math homework?

Back

9/10 of an hour.

Front

Jon cut a piece of ribbon that was 7/12 foot long. Sara cut a piece of ribbon that was 5/12 foot long. How much longer is Jon’s piece of ribbon than Sara’s?

Back

1/6 foot.

Front

Ralph rode his bike 4/8 mile. Ashton rode his bike 3/8 mile. How much farther did Ralph ride than Ashton?

Back

1/8 mile farther.