Operating Engineers Local 12 Apprenticeship Written Exam 2026–2027 | 300 Practice Questions, Answers & Detailed Rationales

Operating Engineers Local 12 Apprenticeship
Written Exam 2026–2027 | 300 Practice Questions,
Answers & Detailed Rationales

,Operating Engineers Local 12 Apprenticeship Written Exam
Original Practice Questions — Q1–100

SECTION 1: MATHEMATICS & ARITHMETIC

1. What is 48 + 37?

A. 75
B. 82
C. 85
D. 95

Answer: C. 85

Rationale: 48 + 37 = 85.

2. What is 125 − 68?

A. 47
B. 57
C. 63
D. 67

Answer: B. 57

Rationale: Subtracting 68 from 125 gives 57.

3. What is 16 × 7?

A. 96
B. 102
C. 112
D. 126

Answer: C. 112

Rationale: 16 × 7 = 112.

4. What is 144 ÷ 12?

A. 10
B. 11
C. 12
D. 14

Answer: C. 12

,Rationale: 12 × 12 = 144, so 144 ÷ 12 = 12.

5. What is 3/4 expressed as a decimal?

A. 0.25
B. 0.50
C. 0.70
D. 0.75

Answer: D. 0.75

Rationale: Dividing 3 by 4 gives 0.75.

6. What is 25% of 200?

A. 25
B. 40
C. 50
D. 75

Answer: C. 50

Rationale: 25% = 0.25, and 0.25 × 200 = 50.

7. A machine operates for 8 hours per day for 5 days. How many hours does it operate
altogether?

A. 35
B. 40
C. 45
D. 50

Answer: B. 40

Rationale: 8 × 5 = 40 hours.

8. Which fraction is equivalent to 1/2?

A. 2/3
B. 3/5
C. 4/8
D. 5/8

Answer: C. 4/8

Rationale: Dividing both 4 and 8 by 4 produces 1/2.

, 9. What is 2.5 + 3.75?

A. 5.25
B. 6.00
C. 6.25
D. 6.75

Answer: C. 6.25

Rationale: 2.50 + 3.75 = 6.25.

10. What is 10% of 450?

A. 35
B. 40
C. 45
D. 50

Answer: C. 45

Rationale: 450 × 0.10 = 45.

11. A worker earns $24 per hour and works 8 hours. What is the gross pay for the day?

A. $172
B. $182
C. $192
D. $202

Answer: C. $192

Rationale: $24 × 8 = $192.

12. What is 7²?

A. 14
B. 21
C. 42
D. 49

Answer: D. 49

Rationale: 7² means 7 × 7, which equals 49.

13. What is the greatest common factor of 18 and 24?