# Extra Credit01

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```					Math 7 – Final Exam Extra Credit #1                       Name
Date

Answer each of the following questions without using a calculator.

168
1.   (2.5)(6.7) =                            2.       =
7

3.   Estimate 92  9.                        4.   Estimate 58  8.

5.   Is 1,943 divisible by 6?                6.   Is 41,832 divisible by 3?

7.   List all of the factors of 36.          8.   List the first five multiples of 15.

9.   Simplify 5  6  2 + 4  2.             10. Simplify 48 – 36  (11 – 2).

11. Compare using <, > or =. 0.897 ____ 0.987

12. Which number is not prime, 29, 31, 47 or 51?

13. Write the prime factorization of 144 using exponents.

14. Evaluate –6b + d when b = 3 and d = 7.

15. Solve and check the equation 112 = 7b.

16. Which digit in the number 34,768.5219 is in the hundredths place?

17. Round 53.75 to the underlined place.

18. 568.43 – 112.092 =                       19. 123.45 + 67.5 + 7 + 0.005 =

22
20. Reduce       to lowest terms.            21. Write 0.45 as a fraction in lowest terms.
33

22. Write 0.35 as a percent.                 23. Write 1.25 as a percent.
24. If one die is rolled, what is the probability that you will get an even number?

25. Find the mean for 9, 19, 15, 4, 23, 14, 20, 15 and 7.

26. Find the median for 23, 15, 36, 27, 31 and 18.

27. Find the mode for 56, 89, 45, 78, 93, 56, 78, 97, 32 and 56.

7    63                                        6 36
28. Solve for x:       =                      29. Solve for x:      =
11   x                                         x 54

14                                               1
30. Change      to a mixed number.            31. Change 6      to an improper fraction.
3                                               4

8                                             1
32. Change       to a decimal.                33. Change      to a percent.
25                                            8

1   2                                      1   1
34. 5     –3                                 35. 4  2 
4   3                                      2   4

36. Find the unit rate for 54 pages in 9 minutes.

37. Find the area of a triangle with a base of 16 feet and a height of 7 feet.

38. Change 3% to a decimal.                   39. Change 35% to a fraction in lowers terms.

40. How much interest is earned on \$759 in three years if the interest rate is 5%?

41. Find the circumference of a circle with a radius of 16 cm.

42. 15 is what percent of 70?                 43. What is 68% of 280?

44. I am part of a line with one endpoint. What am I?

45. Find the perimeter of a regular hexagon with side 2 cm.

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