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Pre Algebra
Unit 3
Unit 3 Review
NAME:___________________________________
1. Write 34.78266 in words.
2. Write 2.00067 in words.
3. Write the following as a number.
Twenty-three and fifty-six thousandths
4. Write the following as a number.
Thirty-five ten-thousandths
Find the absolute value of the following.
5. |−21.1|
6. |5.23|
7. – |−4.25|
Order the following by placing < or > between the numbers.
8. 32.1234
32.123
9. 2.301
2.31
11. Write −3.63 as a fraction.
10. −25.34
− 25.304
12. Write 5.625 as a fraction.
13. Round −34.56782 to the nearest thousandth.
American River College
141
Milano
Pre Algebra
Unit 3
14. Round −2.34567 to the nearest hundredth.
15. Round 2.34723 to the nearest ten-thousandth.
16. Round to the nearest dollar : $ 34.76
17. You calculate the cost of a single item bought in bulk as $ 4.34567. How much would you pay for it?
Perform the indicated operation
18. −23.11 + 34.786
19. −78.123 + −34.27
20. −275.1 − 43.213
21. −25.75 − −344.678
22. 8.375 − 6.4
23. −345.1 + 34.345
24. Sue has$ 34.44 in an account and writes a check for $50. If the check clears, what is Sues account
balance?
American River College
142
Milano
Pre Algebra
Unit 3
Perform the indicated operation.
25. −23.45−3.2
26. −2.324 ∙ 5.5
27. −3.7−2.54
28. −23.45610000
29.5.678−10
30. 3.234 ∙ 0.001
31. Given the formula for circumference is = 2
circle whose radius, r, equal to 3 m.
32. 31.8 ÷ 15
American River College
ℎ ≈ 3.14. find the circumference of a
33. 385.5 ÷ 12
143
34. 25 ÷ 6
Milano
Pre Algebra
Unit 3
35. 12.56 ÷ 0.2
36. 5 ÷ 0. 9
37. 1495.56÷ 1.21
Round the following to the nearest Thousandth.
38. 456 ÷ 2.3
39. 23 ÷ 7
41. Write as a decimal.
40. 4.23 ÷ 0.7
42. Write ! as a decimal.
Order the following by placing a < or > in between the numbers
43. 0.85
"
44.
American River College
144
#
!
0.4
Milano
Pre Algebra
Unit 3
Complete the following
45. −2.1$
46. −1.2$
47. −0.4#
48. 2.10.2%
49. 3.1 −1.1#
50. 2.3 + 1.20.2
51. 3.6 ÷ 0.3 ∙ 2.12
52. 20.2$ + 3.24.1
53. 3.25 ÷ 0.05 + 3.2 ∙ 1.25
54. Find the average of 77, 75, and 70.
55. √36
American River College
56.√121
57.−√49
145
Milano
Pre Algebra
Unit 3
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American River College
146
Milano