Ordering Real Numbers in 8th Grade Math

The video tutorial introduces real numbers, explaining that they include both rational and irrational numbers. It covers the concept of rational numbers as ratios and demonstrates how to approximate and simplify expressions involving square roots. The tutorial also guides viewers on ordering real numbers by approximating square roots and placing them on a number line, emphasizing the comparison of values to determine their order.

Which of the following is NOT a real number?

• √2

• 3

• i

• π

What is a rational number?

• A number that can be written as a ratio of two integers

• A number that cannot be written as a ratio

• A number that is always negative

• A number that is always positive

Why can't the denominator in a rational number be zero?

• Because it would make the number undefined

• Because it would make the number irrational

• Because it would make the number negative

• Because it would make the number positive

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CCSS.HSN.RN.B.3

What is the approximate value of √2?

• 1.7

• 1.6

• 1.5

• 1.4

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CCSS.8.NS.A.2

If √4 equals 2, what is √16?

• 2

• 5

• 3

• 4

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CCSS.8.EE.A.2

Which of the following is greater: √5 or 2.5?

• They are equal

• √5

• 2.5

• Cannot be determined

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CCSS.8.NS.A.2

What is the approximate value of √5?

• 2.1

• 2.2

• 2.3

• 2.4

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CCSS.8.NS.A.2

Which two perfect squares is √3 between?

• 2 and 3

• 1 and 2

• 4 and 5

• 3 and 4

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CCSS.8.NS.A.2

What is the approximate value of √3?

• 1.5

• 1.8

• 1.6

• 1.7

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CCSS.8.NS.A.2

In ordering from least to greatest, which comes first: √3, √5, or 2.5?

• √3

• √5

• They are equal

• 2.5

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CCSS.8.NS.A.2