Grade 8 McGraw Hill Glencoe - Answer Keys Answer keys Chapter 1

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Grade 8 McGraw Hill Glencoe - Answer Keys

Chapter 1 - Real Numbers; Lesson 9: Estimate Roots

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Question 14 (request help)
Persevere with Problems Amanda purchased a storage cube that has a volume of 4 cubic feet. She wants to put it on a bookshelf that is 12 inches tall. Will the cube fit? Explain.

Question 15 (request help)
Without a calculator, determine which is greater, \(\sqrt{94}\) or 10. Explain your reasoning.
- \(\sqrt{94}\)
- \(10\)

H.O.T. Problems Higher Order Thinking

Question 16 (request help)
Persevere with Problems Find two numbers that have square roots between 7 and 8. One number should have a square root closer to 7 and the other number should have a square root closer to 8. Justify your answer.
- 40
- 50
- 60
- 70

Question 17 (request help)
Find the Error Jasmine is estimating \(\sqrt{200}\). Find her mistake and correct it.

\(\sqrt{200}\approx\)

Question 18 (request help)
Construct an Argument If \(\text{x}^{4} = \text{y}\), then x is the fourth root of y. Explain how to estimate the fourth root of 30. Find the fourth root of 30 to the nearest whole number.

The fourth root of 30 is about

Question 19 (request help)
Reason Inductively Suppose x is a number between 1 and 10 and y is a number between 10 and 20. Determine whether the statement below is always, sometimes or never true. Explain your reasoning.

\(\sqrt{\text{x}} \gt \sqrt[3]{\text{y}}\)