Digits, Grade 8, Volume 1, Homework Helper

### 1-2: TEKS Practice

• 1. Think About the Process

• a. What is the first step in finding the two consecutive whole numbers between which square root of 845 is located?

• A. Find the two perfect squares closest to 845.

• B. fraction square root of 844 , plus , square root of 846 , over 2 end fraction . . .

• C. Evaluate square root of 845 squared end root .

• D. Evaluate square root of 845 .

• b. On a number line, between which two whole numbers would square root of 845 be located?

• A. 31 and 32

• B. 29 and 30

• C. 28 and 29

• D. 30 and 31

• 2. On a number line, between which two consecutive whole numbers would square root of 61 be located?

• A. 7 and 8

• B. 9 and 10

• C. 6 and 7

• D. 8 and 9

• 3. The height of a painting is square root of 90 ft. Between which two consecutive whole numbers is square root of 90 ?

• A. 11 and 12

• B. 8 and 9

• C. 10 and 11

• D. 9 and 10

• 4. Estimate square root of 15 to the nearest tenth. Then locate square root of 15 on a number line.

• 5. Estimate square root of 136 to the nearest tenth.

• 6. Estimate square root of 37 to the nearest hundredth. Then locate square root of 37 on a number line.

• 7. Think About the Process

• a. What is the second step in finding the two consecutive whole numbers between which square root of 185 is located?

• A. Evaluate fraction square root of 184 , plus , square root of 186 , over 2 end fraction .

• B. Find the square roots of the two perfect squares closest to 185.

• C. Evaluate square root of 185 .

• D. Evaluate square root of 185 squared end root .

• b. Estimate square root of 185 to the nearest hundredth.

• 8. The area of a square poster is 31 in.2. Find the length of one side of the poster to the nearest tenth of an inch.

• 9. A tree is 16 feet tall. A wire runs from the top of the tree to a point 8 feet from its base. The wire is square root of 320 feet long. Estimate the length of the wire to the nearest hundredth of a foot.

• 10.

• a. Writing On a number line, between which two consecutive whole numbers would square root of 381 be located?

• A. 19 and 20

• B. 20 and 21

• C. 18 and 19

• D. 21 and 22

• b. Explain why it might be useful to approximate the value rather than use the exact value.

• 11. Mental Math The volume of displacement in an engine is square root of 84 L. Between which two consecutive whole numbers is square root of 84 ?

• A. 8 and 9

• B. 11 and 12

• C. 10 and 11

• D. 9 and 10

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