Subtracting fractions from whole numbers

Front

What is a fraction?

Back

A fraction represents a part of a whole. It 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 a fraction from a whole number?

Back

Subtracting a fraction from a whole number means finding the difference between the whole number and the fraction, resulting in a new number that may also be a fraction.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you convert a whole number to a fraction?

Back

To convert a whole number to a fraction, you can write it as the whole number over 1 (e.g., 5 = 5/1).

Tags

CCSS.3.NF.A.3C

Front

What is the first step in subtracting a fraction from a whole number?

Back

The first step is to convert the whole number into a fraction with the same denominator as the fraction being subtracted.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

If you have 54 - 3/5, what is the first step?

Back

Convert 54 to a fraction: 54 = 54/1. Then find a common denominator with 3/5.

Tags

CCSS.7.NS.A.1C

Front

What is the common denominator for 54/1 and 3/5?

Back

The common denominator is 5. Convert 54/1 to 270/5.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you subtract fractions with different denominators?

Back

Convert both fractions to have a common denominator, then subtract the numerators and keep the common denominator.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is 54 - 3/5 expressed as a fraction?

Back

54 - 3/5 = 270/5 - 3/5 = 267/5, which simplifies to 53 2/5.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is 1 - 2/8?

Back

1 - 2/8 = 1 - 1/4 = 3/4, which is the same as 6/8.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you simplify a fraction?

Back

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