4.3A Unit Fractions

Front

What is a unit fraction?

Back

A unit fraction is a fraction where the numerator is 1 and the denominator is a positive integer. For example, 1/2, 1/3, and 1/4 are unit fractions.

Front

How do you represent a unit fraction visually?

Back

A unit fraction can be represented visually by dividing a whole into equal parts. For example, 1/4 can be shown as one part of a circle divided into four equal sections.

Front

What is the denominator in a fraction?

Back

The denominator is the bottom number of a fraction that indicates how many equal parts the whole is divided into.

Front

What is the numerator in a fraction?

Back

The numerator is the top number of a fraction that indicates how many parts of the whole are being considered.

Front

If you have 1/3 of a pizza, how many equal parts is the pizza divided into?

Back

The pizza is divided into 3 equal parts.

Front

What does it mean to add unit fractions?

Back

Adding unit fractions means combining the fractions with a numerator of 1. For example, 1/4 + 1/4 = 2/4, which can be simplified to 1/2.

Front

Can you give an example of subtracting unit fractions?

Back

Yes! For example, 1/2 - 1/4 = 2/4 - 1/4 = 1/4.

Front

What is the sum of 1/6 and 1/6?

Back

The sum of 1/6 and 1/6 is 2/6, which simplifies to 1/3.

Front

How do you find a common denominator for unit fractions?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators. For example, for 1/3 and 1/4, the LCM is 12.

Front

What is the relationship between unit fractions and whole numbers?

Back

Unit fractions represent parts of a whole, and multiple unit fractions can be added together to form whole numbers. For example, 1/4 + 1/4 + 1/4 + 1/4 = 4/4 = 1.