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100+ Free CAAS SAR-66 Module 1 Mathematics Practice Questions

CAAS SAR-66 Category B1/B2 Licence Exam - Module 1 Mathematics (Singapore) practice questions are available now; exam metadata is being verified.

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2026 Statistics

Key Facts: CAAS SAR-66 Module 1 Mathematics Exam

32 Qs

Total multiple-choice questions per exam attempt.

CAAS AC 66-13 Appendix A

40 Mins

Time duration allotted for the exam.

CAAS AC 66-13 Examination Regulations

75%

Minimum passing score per module.

CAAS SAR-66 Section 1

S$87.20

Exam fee per basic knowledge subject.

Air Navigation Order Twelfth Schedule (1 Jan 2026)

3 Submodules

Arithmetic (1.1), Algebra (1.2), Geometry (1.3).

CAAS SAR-66 Appendix 1 Syllabus

The CAAS SAR-66 Module 1 Mathematics exam is a 40-minute CBT with 32 MCQs requiring a 75% pass score for Singapore Aircraft Maintenance Engineer Licence certification.

Sample CAAS SAR-66 Module 1 Mathematics Practice Questions

Try these sample questions to test your CAAS SAR-66 Module 1 Mathematics exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Simplify the arithmetic fraction addition: 3/8 + 5/16.
A.11/16
B.8/24
C.13/16
D.7/8
Explanation: To add fractions with different denominators, find the common denominator of 16. Convert 3/8 to 6/16, then add 6/16 + 5/16 to obtain 11/16. This is the fully simplified fraction.
2Convert an aircraft structural rivet length of 45.0 inches into millimeters (1 inch = 25.4 mm).
A.114.3 mm
B.1143.0 mm
C.11.43 mm
D.11430 mm
Explanation: To convert inches to millimeters, multiply the value in inches by 25.4 mm/inch. 45.0 × 25.4 = 1143.0 mm. This represents the precise equivalent metric length.
3An aircraft fuel tank contains 150 US gallons of Jet A-1 fuel. How many liters is this equivalent to? (1 US gallon = 3.78541 liters).
A.39.63 liters
B.56.78 liters
C.567.81 liters
D.5678.1 liters
Explanation: Convert US gallons to liters by multiplying 150 by the conversion factor 3.78541 L/gal. 150 × 3.78541 = 567.8115 liters, which rounds to 567.81 liters.
4A hydraulic fluid mixture requires a ratio of mineral oil to chemical additive of 7 : 3. If 21.0 liters of mineral oil are used, how many liters of additive must be added?
A.9.0 liters
B.6.3 liters
C.14.0 liters
D.4.5 liters
Explanation: Set up the proportion: Oil / Additive = 7 / 3. Given Oil = 21.0, Additive = 21.0 × (3 / 7) = 3.0 × 3 = 9.0 liters.
5An aircraft main fuel tank has a maximum capacity of 4,500 liters. If the tank is filled to 84% of its total capacity, how many liters of fuel are in the tank?
A.3,600 liters
B.3,780 liters
C.3,850 liters
D.756 liters
Explanation: To calculate the percentage volume, multiply 4,500 by the decimal equivalent of 84%, which is 0.84. 4,500 × 0.84 = 3,780 liters.
6What is the principal square root of 0.0064?
A.0.8
B.0.08
C.0.008
D.0.032
Explanation: Since 0.08 × 0.08 = 0.0064, the square root of 0.0064 is 0.08. When taking the square root of a decimal, the number of decimal places is halved.
7An engine's oil consumption over 4 consecutive flights was recorded as 1.2 L, 1.5 L, 0.9 L, and 1.4 L. What was the average oil consumption per flight?
A.1.30 L
B.1.20 L
C.1.25 L
D.5.00 L
Explanation: To find the average, sum all 4 readings and divide by 4. Sum = 1.2 + 1.5 + 0.9 + 1.4 = 5.0 L. Average = 5.0 / 4 = 1.25 liters per flight.
8Express the decimal value 0.375 as a fully simplified fraction.
A.3/8
B.3/7
C.7/16
D.37/100
Explanation: Write 0.375 as 375/1000. Dividing numerator and denominator by their greatest common divisor (125) yields 3/8.
9Convert a maximum takeoff mass of 2,500 pounds (lb) to kilograms (kg). (1 lb = 0.453592 kg).
A.5,511.56 kg
B.1,133.98 kg
C.11,339.8 kg
D.113.40 kg
Explanation: To convert pounds to kilograms, multiply by 0.453592. 2,500 × 0.453592 = 1,133.98 kg.
10Find the area of a rectangular aircraft skin access panel measuring 35 cm long by 20 cm wide.
A.110 cm²
B.350 cm²
C.700 cm²
D.1400 cm²
Explanation: The area of a rectangle is calculated as Length × Width. 35 cm × 20 cm = 700 cm².

About the CAAS SAR-66 Module 1 Mathematics Practice Questions

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