PRETEST
Estimating answers (Estimate whole-number answers to the problems.)1. (4.02)2 2. 1.935 X
Estimating answers (Estimate whole-numbers answers to the problems.)
1. (4.02)2 2. 1.935 x 7.89 3. 31.219 / 2.0593
Rounding numbers (Round numbers to the nearest tenth.)
4. 6.06 5. 0.35 6. 10.348
DECIMALS
Add:
7. 3.12 + 6.3 + 2.004 8. 12 + 8.625 + 2.316 + 4.2
Subtract:
9. 28.76 - 8.91 10. 3.2 - 1.135
Multiply:
11. 6.2 x 8.06 12. 0.35 x 0.162
Divide:
13. 64.1 / 21.25 14. 0.065 / 0.0038
FRACTIONS
Add:
15. 1/8 + 3/4 + 1/2 16. 1/3 + 1/2
Subtract:
17. 11/16 - 1/2 18. 5/9 - ½
Multiply:
19. 4/5 x 3/4 20. 2/3 x 1/4 x 3/5
Divide:
21. 3/8 / 1/4 22. 7/9 / 1/4
NEGATIVE NUMBERS
Add:
23. (-5) + 16 + (-1) + (-4) 24. (-11) + (-2) + (-12) + 3
Subtract:
25. (-10) - (-3) 26. (-8) - (-2)
Multiply:
27. (-5) x (-5) 28. (-8) x (3)
Divide:
29. (-10) / (-3) 30. (-21) / 4
PERCENTS AND PROPORTIONS
31. 12 is what percent of 36?
32. Find 27 percent of 84.
33. What proportion of 112 is 21?
34. A proportion .40 of the tagged birds were recovered. 150 were tagged in all. How many were
recovered?
ABSOLUTE VALUE
35. | -5| 36. |8-12|
+ and - Problems
37. 8 + and - 2 = 38. 13 + and - 9 =
Exponents
39. 42 40. 2.52 41. 0.352
Square roots
42. 43. 44.
Complex problems (Round answers to two decimal places.)
45. 3 + 4 + 7 + 2 + 5 46. (5 - 3)2 + (3 - 3)2 + (1 - 3)2
5 3 - 1
47. (8 - 6.5)2 + (5 - 6.5)2 48.
2 - 1
49. 50. (3) (4) + (6) (8) + (5) (6) + (2) (3)
(4) (4 - 1)
51. 190 - (25 2 / 5) 52. 12 ( 50 - 20) 2
5 - 1 (8) (10) (12) (11)
53. 6 [(3 + 5)(4 - 1) + 2]
52 - (6) (2)
54. For the numbers 1, 2, 3, and 4: Find the sum and the sum of the squared numbers.
55. For the numbers 2, 4, and 6: Find the sum and the sum of the squared numbers.
SIMPLE ALGEBRA (Solve for x.)
56. 57.
58. 59.
Summation Exercise
X / Y1 / 6
2 / 5
3 / 4
4 / 3
5 / 2
6 / 1
Calculate 1 and 2:
1. SXi2
2. (SXi)2
3. Why are these values different?
Calculate 4 and 5:
4. SXiYi
5. SXiSYi
6. Why are these values different?