Classifying Numbers and the Real Number System

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

An irrational number doesn't have a pattern.

• true

• false

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CCSS.HSN.RN.B.3

includes integers, fractions, terminating and repeating decimals.

• Rational Numbers
• Irrational Numbers

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CCSS.6.NS.C.6

CCSS.6.NS.C.7

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

Which number is a rational number ?

• 1/4
• π
• √3
• ∛25

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CCSS.6.NS.C.6

Which number is irrational?

• 9.6
• √45
• 3/8
• 3.4 x 10 ⁵

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CCSS.HSN.RN.B.3

√7

• Rational 
• Irrational

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CCSS.8.NS.A.1

√25

• Rational
• Irrational

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CCSS.8.NS.A.1

-17.565

• Rational
• Irrational

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CCSS.6.NS.C.6

CCSS.6.NS.C.7

.141414141414...

• Rational 
• Irrational 

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CCSS.7.NS.A.2D