Adding and Subtracting Fractions and Mixed Numbers

Front

What is the process for finding the Lowest Common Denominator (LCD) of two fractions?

Back

To find the LCD, identify the least common multiple (LCM) of the denominators of the fractions.

Front

How do you subtract fractions with unlike denominators?

Back

1. Find the LCD of the denominators. 2. Convert each fraction to an equivalent fraction with the LCD. 3. Subtract the numerators and keep the LCD as the new denominator.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the formula for adding two fractions?

Back

To add two fractions, find a common denominator, convert the fractions, and then add the numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a proper fraction, such as 2 1/2.

Tags

CCSS.3.NF.A.3C

Front

How do you convert a mixed number to an improper fraction?

Back

Multiply the whole number by the denominator, add the numerator, and place the result over the original denominator.

Front

What is the result of adding 3/4 and 3/8?

Back

The result is 9/8 or 1 1/8 after finding the LCD and adding.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the simplest form of a fraction?

Back

A fraction is in simplest form when the numerator and denominator have no common factors other than 1.

Front

How do you add mixed numbers?

Back

1. Add the whole numbers. 2. Add the fractions. 3. If necessary, convert the sum of the fractions to a mixed number.

Tags

CCSS.7.NS.A.1C

Front

What is the least common multiple (LCM)?

Back

The LCM of two or more numbers is the smallest number that is a multiple of each of the numbers.

Front

How do you simplify the fraction 11/10?

Back

11/10 is already in simplest form, but it can be expressed as a mixed number: 1 1/10.