Ratio

The ratio of red counters to blue counters is 3 : 1

What fraction of the counters are blue?

• ¹/₄

• ³/₄

• ¹/₃

• ³/₁

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Simplify

• 2:10

• 1:10

• 1:2

• 2:1

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

What is the ratio to the picture shown, triangles to squares?

• 2:6

• 5:6

• 3:4

• 4:3

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

A class has 30 students. 18 are boys. What is the ratio of boys to girls? (you must simplify)

• 12:18

• 3:2

• 30:18

• 18:7

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

England scored 30 goals in total. 10 were scored in the Euro Cup and 20 were scored in the World Cup. What ratio is appropriate?

• 30:20

• 10:20

• 2:1

• 10:30

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Write the ratio as a fraction in simplest form.
6 losses to 13 wins

• 6/13
• 13/6
• 6/3
• 2/5

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Write the ratio as a fraction in simplest form.
4 inches of snow in 9 days

• 9/4
• 4/9
• 4/7
• 9/2

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Write the ratio as a fraction in simplest form.
21 wins to 14 losses

• 21/14
• 2/3
• 3/2
• 14/21

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Write the ratio as a fraction in simplest form.
27 wins to 18 losses

• 2/3
• 27/18
• 18/27
• 3/2

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CCSS.6.RP.A.1

CCSS.6.RP.A.2