Subtracting Fractions and Mixed Numbers

What is the first step when subtracting fractions or mixed numbers?

• Subtract the numerators.

• Find a common denominator.

• Convert mixed numbers to improper fractions.

• Write the final answer in simplest form.

What is the simplified result of 7/8 - 3/8?

• 4/8

• 1/4

• 1/2

• 2/8

What is the result of 5/7 - 4/21?

• 1/21

• 11/21

• 19/21

• 1/7

What is the result of 7 5/7 - 2 3/7?

• 5 2/7

• 5 8/7

• 9 2/7

• 4 2/7

Jerry and Jessica are splitting 1 watermelon. Jerry eats 3/10 of the watermelon, and Jessica eats 1/5 of the watermelon. How much of the watermelon is left over?

• 5/10

• 1/2

• 7/10

• 2/5