Arithmetic with fractions

The number on the top of a fraction is called what?

• numerator
• denominator

Tags

CCSS.3.NF.A.2B

CCSS.3.NF.A.1

The number on the bottom of a fraction is called what?

• numerator
• denominator

Tags

CCSS.3.NF.A.2B

CCSS.3.NF.A.1

Simplify the fraction

• 6/8
• 4/5
• 2/3
• 3/4

Tags

CCSS.6.EE.A.3

CCSS.6.EE.A.4

CCSS.6.NS.A.1

To multiply two fractions, you

• multiply across both top and bottom

• multiply across the top but leave the bottom alone

• flip the second fraction and then multiply across top and bottom

• must first make a common denominator

Multiply these factions

• 1 / 5
• 1 / 1
• 5 / 30
• 0

Tags

CCSS.5.NF.B.4

CCSS.5.NF.B.6

Multiply these fractions

• 5   2 / 3
• 1  1 / 2
• 2 / 3
• 16   2 / 3

To divide one fraction by another, you

• multiply across both top and bottom

• multiply across the top, but leave the bottom alone

• flip the second fraction, and then multiply across both top and bottom

• must first make a common denominator

What is the quotient of these fractions in lowest terms?

• 8/5
• 8/20
• 16/10
• 2/5

Tags

CCSS.5.NF.B.3

• 10/3
• 2  2/3
• 2/15
• 15/2

Tags

CCSS.5.NF.B.3

CCSS.5.NF.B.7

Before you can subtract one fraction from another,

• you must change the second fraction into its reciprocal and then add the numerators

• the denominators must be the same

• both fractions must be positive