Lesson 3: Decimals

Solve the problem and round to two decimal places. 21.55/64.95 a. 2.99 b. 3.01 c. 3.013 d. 3.22

b. 3.01

Convert to a fraction and simplify, if needed. 0.6 = a. 3/10 b. 3/5 c. 6/10 d. 60/100

b. 3/5

Solve this problem involving decimal numbers. Do not round off. 3.895 + 0.443 + 0.625 - 0.177 = a. 4.777 b. 4.786 c. 4.87 d. 5.14

b. 4.786

The diameter of 4 AWG bare copper wire is listed as 0.2043 inch. Write the decimal as a fraction in simplest terms. a. 2043/100 b. 2043/10,000 c. 2043/1000 d. 204.3/10

b. 2043/10,000

Solve this problem involving decimal numbers. Do not round off. 48.45 - 21.57 a. 26.70 b. 26.88 c. 26.97 d. 70.02

b. 26.88

The diameter of No. 2 solid conductor measures 0.292 inch, and the diameter of 1/0 solid copper conductor is 0.372 inch. What is the difference in the diameters of these conductors? a. 0.080" b. 0.10" c. 0.644" d. 6.40"

a. 0.080"

Solve this problem involving decimal numbers. Do not round off. 22.26x0.047= a. 1.04622 b. 1.06314 c. 1.06422 d. 1.64724

a. 1.04622

Convert to a fraction and simplify, if needed. 0.125 = a. 1/8 b. 5/40 c. 125/1000 d. 25/100

a. 1/8

Solve this problem involving decimal numbers. $2.15 x 1.3 = a. $2.80 b. $2.97 c. $27.97 d. $28.00

a. $2.80

The resistance of a splicing sleeve was 0.0128 ohm. By using a non-oxide compound, the resistance was lowered by 0.00086 ohm. What was the resistance of the connection made with the compound? a. 0.01194 Ω b. 0.01212 Ω c. 0.01366 Ω d. 0.02094 Ω

a. 0.01194 Ω

Solve this problem involving decimal numbers. Do not round off. 114.2 - 62.875 = a. 51.325 b. 51.335 c. 51.425 d. 52.325

a. 51.325

Solve this problem involving decimal numbers. Do not round off. $450.00 - $299.95 = a. $140.05 b. $150.05 c. $150.15 d. $250.05

b. $150.05

Solve the problem and round to two decimal places. 102/10.21= a. 0.01 b. 0.10 c. 1.0 d. 10.0

b. 0.10

Convert to a decimal number, and round to two decimal places, if necessary. 1/3= a. 0.3 b. 0.33 c. 1.33 d. 3.0

b. 0.33

Solve this problem involving decimal numbers. Do not round off. 6.9 - 6.2 = a. 0.07 b. 0.7 c. 6.7 d. 13.1

b. 0.7

Solve this problem involving decimal numbers. Do not round off. 4.9x5.6= a. 10.5 b. 27.44 c. 31.85 d. 53.9

b. 27.44

Tony was reimbursed for expenses he incurred while attending a training class for his job. He was paid 40.5 cents per mile for driving to the class and he drove a total of 83.6 miles. How much was he reimbursed for driving to the class? a. $3.39 b. $33.85 c. $33.86 d. $206.42

c. $33.86

Convert to a decimal number, and round to two decimal places, if necessary. 4/5= a. 0.08 b. 0.125 c. 0.8 d. 1.25

c. 0.8

Solve this problem involving decimal numbers. Do not round off. 0.86 + 0.2 + 0.47 = a. 0.153 b. 1.43 c. 1.53 d. 15.3

c. 1.53

Solve the problem and round to two decimal places. 22 ÷ 1.9 = a. 8.34 b. 11.578 c. 11.58 d. 41.8

c. 11.58

Solve this problem involving decimal numbers. Do not round off. 4.3 + 11.9 a. 1.62 b. 14.2 c. 16.2 d. 16.6

c. 16.2

Convert to a decimal number, and round to two decimal places, if necessary. 2 3/4= a. 0.275 b. 2.33 c. 2.75 d. 3.33

c. 2.75

A fault on a 4.16-kilovolt bus caused the voltage to dip to 0.82 of its original value. What was the voltage at the time of fault, expressed in kilovolts and rounded to the nearest hundredth? a. 3.34 kV b. 3.40 kV c. 3.41 kV d. 5.07 kV

c. 3.41 kV

Solve the problem and round to two decimal places. 22/177= a. 0.12 b. 5.30 c. 5.32 d. 8.05

c. 5.32

Solve this problem involving decimal numbers. Do not round off. 123.765 + 422.073 = a. 298.308 b. 367.838 c. 545.838 d. 556.838

c. 545.838

The voltage drop in the transformer leads, the secondary windings, and the service conductors are 0.09, 2.75, and 3.2 volts, respectively. What is the total voltage drop? a. 5.14 V b. 5.86 V c. 6.04 V d. 6.40 V

c. 6.04 V

Solve this problem involving decimal numbers. Do not round off. 42.6 + 23.95= a. 18.95 b. 65.55 c. 66.55 d. 66.65

c. 66.55

A contractor figured materials for a job would cost $3,875.75. He also estimated labor for the same job would cost $2,355.35. If he adds 0.18 of the materials and labor costs to cover overhead and profit, how much will he charge the customer for this job? a. $6,231.10 b. $6,655.06 c. $6,928.74 d. $7,352.70

d. $7,352.70

Solve this problem involving decimal numbers. Do not round off. 17.3x9.7= a. 16.781 b. 27.0 c. 136.67 d. 167.81

d. 167.81

Convert to a fraction and simplify, if needed. 3.875 = a. 3 1/8 b. 31/8 c. 3875/1000 d. 3 7/8

d. 3 7/8