Test1PracticeQuestions

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Page 1 MATH 1132 - Test #1 Practice Questions 1. Evaluate the expression: |27 - 9| - |-11 - 6|. 2. Evaluate the expression: -|6 - 7| + |-3 - 4|. 3. Evaluate the expression: -|4 + 1| - |-4 + 1|. 4. Evaluate the expression: -|-3 + 1 -5| + |3 - 1 + 5|. Approximate Numbers and Rounding 5. Round each number to two decimal places. (a) 23.746 (b) 54.995 001 (c) 94.355 6. Round each number to two significant digits. (a) 80.60 (b) 523.905 (c) 72.164 7. Round each number to the nearest thousand. (a) 657 495 (b) 4500.1 (c) 3500 8. Round each number to the nearest tenth. (a) 16.299 (b) 12.450 (c) 0.001 9. Determine the number of significant digits in each approximate number. (a) 0.076 (b) 14 200 (c) 5.089 (d) 0.540
Page 2 10. Determine the number of significant digits in each approximate number. (a) 50.5 (b) 0.03 (c) 30.0 (d) 1000 11. Combine these approximate numbers and round appropriately: 8235.4 + 98 12. Combine these approximate numbers and round appropriately: 696 + 15.2 13. Combine these approximate numbers and round appropriately: -60.6 - (-1.21) 14. Multiply these approximate numbers and keep the proper number of significant digits in your answer: 0.2001 × 3.49 15. Multiply these approximate numbers and keep the proper number of significant digits in your answer: 5.300 × (-8.72) 16. Multiply these approximate numbers and keep the proper number of significant digits in your answer: 67 000 × 23.54 × 6.712 17. Divide, and then round your answer to the proper number of digits: -629.5 ÷ - 89.34 18. Divide, and then round your answer to the proper number of digits: -34 825 ÷ 6592.3 19. Compute the reciprocal of the following number, keeping the appropriate number of digits in your answer: 1503.0 20. Compute the reciprocal of the following number, keeping the appropriate number of digits in your answer: -12.5
Page 3 21. Perform each computation, keeping the proper number of digits in your answer. (a) (24.5 × 0.040) + (12.5 × 0.13) (b) (c) 22. Perform each computation, keeping the proper number of digits in your answer. (a) (170 + 12.5 × 11.1) - (b) 23. Perform each computation, keeping the proper number of digits in your answer. (a) (b) (c) 24. Perform each computation, keeping the proper number of digits in your answer. (a) (b) (c) 25. Perform each computation, keeping the proper number of digits in your answer. (a) (b) (2.1) 3 - (3.9) 5 (c)
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