Rational vs. Irrational Numbers

What is a rational number ?

• A rational number  is a number that cannot be written as a fraction.
• A rational number is a number that can be written as a ratio.
• A rational number cannot be a repeating  decimal.

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CCSS.5.NBT.A.2

Irrational Numbers....

• cannot be represented as a simple fraction
• can be represented as a fraction
• can be a repeating decimal

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CCSS.8.NS.A.1

What type of number is π ?

• Rational
• Irrational

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CCSS.HSN.RN.B.3

Which number is an irrational number?

• 2.5
• 5.72314.....
• -17
• 1/2

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CCSS.8.NS.A.1

Which number is a rational number?

• 2.25
• -8.78654684598.....
• Square root of 99
• 3.14...

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CCSS.6.NS.C.6

CCSS.6.NS.C.7

5/2

• Rational
• Irrational

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CCSS.6.NS.A.1

CCSS.6.NS.C.6

4.032

• Rational 
• Irrational

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CCSS.6.NS.C.6

CCSS.6.NS.C.7

• Rational

• Irrational 

• Neither 

• Both 

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CCSS.HSN.RN.A.1

CCSS.HSN.RN.A.2

CCSS.HSN.RN.B.3

• Yes 

• No

• Sometimes

• Um... 

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CCSS.8.NS.A.1

• Yes

• No

• Sometimes

• I wanna say "Larry"...

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CCSS.7.NS.A.2D

CCSS.8.NS.A.1