Appendix C: Copies of Chapter Quizzes

Whole Numbers Quiz

Find the missing value.

  1. An electrician used switch outlet boxes on eight different jobs. The number of boxes used on each job is 56, 9, 36, 93, 105, 42 and 56. The total number of outlet boxes used is boxes.
  2. For a residential job, a reel containing 1050 feet of cable is delivered. Three 45 foot lengths and three 65 foot lengths are used. There are feet left.
  3. Two thousand five hundred feet of plastic tubing are ordered. The tubing is shipped in 250 foot coils. There are coils shipped.
  4. The materials charged to a wiring job are as follows: 100 amp distribution panel, $36; meter switch, $8; conduit, $28; number 2 wire, $43; BX cable, $25; conduit fittings, $9; outlet boxes. $92; switches, $35; fixtures, $65; and $37 for wire nuts, grounding clips, staples and pipe clamps. The total amount charged for these materials is dollars.
  5. An HVAC company has a payroll of 27 people. Seven people earn $8/hr, eleven people earn $10/hr, and nine people earn $6/hr. If all the employees work 40 hours during the week, the total amount of money earned in one week is dollars.
  6. A large room contains forty fluorescent lamps. Twenty three of the lamps are 40 watt lamps, and the remaining number are 60 watt lamps. The lamps use a total of Watts.
  7. On a certain job, a sum of $438 is spent for materials. Of this amount, $76 is spent for 1 fittings, and $105 is spent for miscellaneous materials. dollars is spent on other materials.
  8. Three plumbers install 180 fixtures in 4 working days. The average number of fixtures installed by each plumber in one day is fixtures.
  9. On a 124 foot length of pipe, 32 supports are used. The supports are equally spaced. If one support is placed at the beginning and one at the end of the pipe, there will be a support every feet.
  10. A 7 floor apartment building has an average of 7 electrical circuits per apartment, and there are 8 apartments per floor. There are circuits in the building.

Answers

  1. 483
  2. 720
  3. 10
  4. 378
  5. 8800
  6. 1940
  7. 257
  8. 15
  9. 4
  10. 392

Fractions Quiz

  1. 11.25 − 3.875 =
    1. 7.15
    2. 7.875
    3. 7.375
    4. 15.125
  2. Reduce 24/64 to lowest terms.
    1. 12/32
    2. 6/16
    3. 3/8
    4. 1.5/4
  3. Reduce 150/275 to lowest terms.
    1. 6/11
    2. 3/5.5
    3. 3/11
    4. 12/22
  4. Change 34/8 into a mixed number.
    1. 3 4/8
    2. 4 1/4
    3. 4 1/8
    4. 4 1/16
  5. Express 5 7/16 as an improper fraction.
    1. 103/16
    2. 57/16
    3. 87/16
    4. 35/16
  6. 1/4 + 5/16 + 7/32 =
    1. 7/16
    2. 13/32
    3. 25/32
    4. 13/16
  7. 5/8 + 9/32 − 1/16 =
    1. 7/8
    2. 27/32
    3. 13/16
    4. 7/16
  8. 7/8 × 5 =
    1. 4 3/4
    2. 3 5/40
    3. 6 3/8
    4. 4 3/8
  9. 3/16 × 5/8 =
    1. 9/32
    2. 9/16
    3. 80/24
    4. 15/128
  10. 4 1/2 × 4 =
    1. 18
    2. 8 1/2
    3. 16 1/2
    4. 16 1/8
  11. 3/8 ÷ 1/16 =
    1. 6
    2. 12
    3. 3/16
    4. 3/128
  12. 5/16 ÷ 4 =
    1. 20/16
    2. 1 1/4
    3. 5/16
    4. 5/64
  13. 17/32 + 1/2 × 1/4 =
    1. 8/32
    2. 21/32
    3. 23/32
    4. 1 9/32
  14. On the sheet metal layout in the drawing, the distance between the centres of hole A and hole D, measuring lengthwise, is 16 centimetres. All dimensions are in centimetres. True or false?
  15. The total length of the sheet metal is 30cm. Hole A is 6cm from the left edge. Hole D is 8cm from the right edge.A total of 256 bronze castings were machined. Each casting had a mass of 793 g, and 158 g were removed from each by machining. The total mass of bronze removed by machining was 162,560 g. True or false?
  16. A counter top is made of 3/4” particleboard and is covered with 1/32” plastic laminate. The width of metal edging required to finish off the edge is 27/32”. True or false?
  17. In one minute, a large reduction gear turns 61/3 revolutions. How many revolutions will it turn in 27 1/2 minutes?
    1. 174 1/6
    2. 162 1/6
    3. 168 1/3
    4. 170 1/3
  18. 12 billets of cold drawn steel 11/2” long can be cut from a bar 20” long, if 1/8” is allowed for each saw cut. True or false?
  19. A 3/16 sheet of metal is thicker than a 13/64” fastener. True or false?
  20. Eight pins, each 43/8” long, have to be cut from a piece of drill rod. There is a 3/32” waste for each cut. What is the minimum length of rod you will need?
    1. 35”
    2. 35 3/4”
    3. 35 21/32
    4. 35 43/64”

Answers

  1. C
  2. C
  3. A
  4. B
  5. C
  6. C
  7. A
  8. D
  9. D
  10. A
  11. A
  12. D
  13. B
  14. True
  15. False
  16. False
  17. A
  18. True
  19. False
  20. C

Decimals Quiz

  1. Round 5237.02046 to the nearest thousandth.
    1. 5000
    2. 5237.02
    3. 5237.021
    4. 5237.02106
  2. Round 12465.078 to the nearest thousand.
    1. 12465
    2. 12000
    3. 10000
    4. 12465.078
  3. 13.963 + 335.021 + 2267.123 =
    1. 2616.17
    2. 2616.107
    3. 2616.296
    4. 2616.182
  4. Add 2.72, 0.6, 110, and 17.225.
    1. 130.545
    2. 135.945
    3. 136.545
    4. 131.545
  5. 11.25 − 3.875 =
    1. 7.15
    2. 7.875
    3. 7.375
    4. 15.125
  6. Multiply 19.5 by 7.65.
    1. 14917.5
    2. 14.9175
    3. 1491.75
    4. 149.175
  7. 18.753 ÷ 0.87 =
    1. 210.55
    2. 21.555
    3. 2.1555
    4. 0.21555
  8. Divide 0.0028 by 0.95. Express your answer to the nearest thousandth.
    1. 0.003
    2. 0.002
    3. 0.0029
    4. 0.00295
  9. 178 + 18 × 6 =
    1. 286
    2. 295
    3. 1176
    4. 19224
  10. 158.58 − 33 × 4 =
    1. −26.58
    2. 502.32
    3. 26.58
    4. −502.32
  11. 1890.33 – 543.48 + 101 =
    1. 1447.52
    2. 2534.81
    3. 2534.85
    4. 1447.85

Answers

  1. C
  2. B
  3. B
  4. A
  5. C
  6. D
  7. B
  8. A
  9. A
  10. C
  11. D

Percentages Quiz

To complete the quiz on the computer, go to the link on the previous page. When completing on the computer, questions will be randomized. The same questions are provided in print below.

  1. 40% of 24 is what?
    1. 14.4%
    2. 9.6%
    3. 8.4%
    4. 10.2%
  2. What percent of 1.32 is 0.6?
    1. 46%
    2. 55%
    3. 45%
    4. 10%
  3. 3 is 15% of 22. True or false?
  4. One part acid and four parts water are mixed as an electrolyte for a storage battery. What percent of the electrolyte is acid?
    1. 25%
    2. 20%
    3. 75%
    4. 80%
  5. The efficiency of a motor is 90%. If the motor delivers 13.5 horsepower, what is the input? (efficiency=output/input)
    1. 15 hp
    2. 15.85 hp
    3. 12.15 hp
    4. 15.28 hp
  6. What percent is wasted when 3.6 of every 120 sheets of metal are spoiled?
    1. 3%
    2. 0.3%
    3. 30%
    4. 300%
  7. A floor joist is allowed to vary 5% of its stated width of 184 mm. The maximum width would be what?
    1. 200 mm
    2. 188.4 mm
    3. 193.2 mm
    4. 197.9 mm
  8. A contractor wants to make a profit of 12% on a job. If the break-even cost is $2345, what should the total job price be, including the profit?
    1. $2626
    2. $2600.40
    3. $2600
    4. $2626.40
  9. The minimum idle speed for a particular engine is 630 rpm. This is 94% of the maximum idle speed of 668 rpm. True or false?
  10. The operating spindle speed of a lathe spindle that rotates freely is 354 rpm. When 16% is lost through slippage and cutting pressure, the new speed is 297 rpm. True or false?

Answers

  1. B
  2. C
  3. False
  4. B
  5. A
  6. A
  7. C
  8. D
  9. False
  10. True

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Math for Trades Volume 1 Copyright © by Chad Flinn and Mark Overgaard is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

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