8. The area of a square sandbox is 83 square feet. To the nearest foot, what is the perimeter of the sandbox? 9. Tito is installing a new kitchen floo...
̅̅̅ written as fraction in simplest form? 4. How is 0. ̅75 ______________________________________________________________________________________________ 5. The Statue of Liberty weighs 450,000 pounds. What is this number written in scientific notation? ______________________________________________________________________________________________ 6. How is the expression 10−5 written using a positive exponent? ______________________________________________________________________________________________ 144 100
7. What is the value of the expression −√
?
_________________________________________________
8. The area of a square sandbox is 83 square feet. To the nearest foot, what is the perimeter of the sandbox? ______________________________________________________________________________________________ 9. Tito is installing a new kitchen floor. The kitchen is square in shape and has an area of 441 square feet. What is the length of one side of Tito’s kitchen? ______________________________________________________________________________________________ 10. Solve the equation 𝑥 2 = 400.
11. Is the point shown on the number line below closer to −√20 or −√25 ?
_____________________________________________________________________________________________ 12. To the nearest whole number, what is the best estimate for √214 ? _____________________________________________________________________________________________ 1
13. Order the set of numbers at the right from least to greatest. Verify {√5, −√6, 2 2 , −3} your answer by graphing the numbers on a number line. __________________________________________
Course 3 • Chapter 1 Real Numbers
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NAME _____________________________________________ DATE ____________________________ PERIOD _____________
14. An ounce of water is equal to 0.0295 liter. What is this number written in scientific notation?
________________________________________________________________________________ 15. The diameter of carbon atom is about 3.4 × 10−7 millimeter. Write this number in standard form. ___________________________________________________________________________________________ Classify each number by determining all sets of numbers to which it belongs. 7
16. 8 _________________________
17. √5 ___________________
18. –7 ___________________
19. Write each number in Exercises 16-18 in the Venn diagram.
Use a problem-solving model to solve each problem. 20. Heather compared the diameter of different objects in the solar system for a science project. She recorded the data in the table. Write the diameter of each object in scientific notation. Which objects have a diameter greater than 1.3×107 Object
