Penn foster 986045 numbers and operations study guide

PENN FOSTER 986045 NUMBERS AND OPERATIONS STUDY GUIDE

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Penn Foster Exam Answers

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Individual Assignment: Numbers and Operations 986045

Penn Foster Answers 986045RR

986045 Numbers and Operations

1. A school custodian waxed a gymnasium floor that measured 20 feet by 20 feet. How many square feet did she have to wax?

A. 800 square feet B. 400 square feet C. 40 square feet D. 80 square feet

2. What is the value of 12.5 × 107?

A. 1,250,000 B. 12.5000000 C. 1.2500000 D. 125,000,000

3. What are the prime factors of 700?

A. 2 × 2 × 5 × 5 × 7 B. 2 × 2 × 2 × 5 × 5 × 7 C. 2 × 2 × 25 × 7 D. 350 × 2

4. What are the prime factors of 625?

A. 1, 5, 5, 5, 5 B. 5, 5, 5, 5 C. 25, 25 D. 5, 5, 25

5. What is 23 squared?

A. 529 B. 1,058 C. 46 D. 129

6. Which of the following is a composite number?

A. 19 B. 1 C. 63 D. 0

7. The Main Street Cinema holds 1,356 people. Last Saturday night, they were sold out for two showings of Super Alien 5. There was a special price of $5 for every seat for each showing. How much money did the theater take in that night?

A. $10,888

B. $13,560 C. $9,848 D. $6,780

8. Which one of the following groups of numbers includes all prime numbers?

A. 3, 11, 23, 31 B. 2, 3, 5, 15 C. 1, 3, 11, 23 D. 7, 17, 63, 67

9. According to the Wall Street Journal, 14,200,000 videotape copies of Walt Disney’s Fantasia have been sold to date. Write that number in scientific notation.

A. 1.42 × 106 B. 142 × 1,000,000 C. 1.42 × 107 D. 142 × 107

10. Heidi, a jewelry salesperson, earns a commission of $55 every time she sells a diamond ring.

How many rings does she have to sell to earn $605? Choose the equation that correctly calculates the amount.

A. $55 × w = $605 B. $55 + w = $605 C. $605 – $55 = w D. $55 – w = $605 – w

11. What is the value of 5.7 Ă— 108?

A. 5.70000000 B. 570,000,000 C. 5,700,000,000 D. 57,000,000

12. Which of the following is a composite number?

A. 13 B. 91 C. 29 D. 139

13. In the equation X/35 = 7, what is the value of x?

A. 5 B. 245 C. 35 D. 7

14. What is the cube of 6?

A. 18 B. 36 C. 42 D. 216

15. What is the value of 7 to the fifth power?

A. 2,401 B. 16,807 C. 78,125 D. 35

16. In the equation Q – 12 = 89, what is the value of Q? A. 78 B. 102 C. 101 D. 77

17. What is the prime factorization of 1,260?

A. 2 × 3 × 5 × 7 B. 2 × 2 × 3 × 3 × 5 × 7 C. 2 × 3 × 5 × 6 × 7 D. 4 × 5 × 7 × 9

18. Which of the following has a value of 84?

A. 512 B. 4,096 C. 83 D. 32

19. Which of the following numbers is a multiple of 6?

A. 882 B. 424 C. 106 D. 333

20. Which one of the following numbers is a multiple of 8?

A. 98 B. 124 C. 512 D. 27