Fractions , Ratio & Proportions

What is a Ratio?

• Is a comparison of two quantities 
• To multiply two fractions 
• A number over another number
• Two decimals that can be multiplied

Which of these ratios is equivalent to 3:4?

• 12:9
• 9:20
• 9:12
• 803:804

A bag of marbles comes with 3 blue marbles, 2 red marbles, and 5 yellow marbles. What is the ratio of red to yellow?

• 2 to 5
• 5 to 3
• 3 to 5
• 5 to 2

A class has 30 students. 18 are boys. What is the ratio of boys to girls?

• 12:18
• 3:2
• 30:18
• 18:7

Multiply these fractions

• 10 / 15
• 15 / 10
• 2 / 3
• 50 / 3

Divide these fractions

• 8 / 2
• 54 / 4
• 9 / 2
• 9 / 24

Change the improper fraction into a mixed number.

• 1 2/3
• 1 3/5
• 2 2/3
• 2 3/5

Change the improper fraction into a mixed number.

• 1 1/4
• 1 2/4
• 3 3/5
• 4 3/5

Change the mixed number into an improper fraction.

• 3/2
• 4/1
• 4/2
• 3/5

Change the mixed number into an improper fraction.

• 4/3
• 3/4
• 1/2
• 3/2