Square Roots Review

When you take the square root of the number above, why do we just leave it as itself, rather than writing it a different way?

• because 262 is NOT a perfect square, so the answer would be a messy decimal.

• because 262 is a perfect square, which means you leave it as it is.

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CCSS.8.EE.A.2

How many square roots does each positive number have? Note: this isn't asking about a positive square root . . .

• 1

• 2

• 3

• 4

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CCSS.8.EE.A.2

What are the two square roots of 6,400?

• 6000 and 400

• 80 and -80

• 3,200 and -3,200

• 2 and -3,200

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CCSS.8.EE.A.2

What is the negative square root of 1764?

• 42

• -882

• 42 and -42

• -42

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CCSS.8.EE.A.2

−√784

• 28

• -28

• -392

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CCSS.8.EE.A.2

√2809

• 51

• 52

• 53

• 1,404.5

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CCSS.8.EE.A.2

When using a calculator, do you input the square root symbol first or the number first?

• square root symbol first then number

• number first then square root symbol

• it depends on what type of calculator you are using

• you actually have to push the 2nd button first

Tags

CCSS.8.EE.A.2

√64=___

• + 6 only

• ± 6

• ± 8

• + 8 only

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CCSS.8.EE.A.2