Free Part 66 Module 1 sample questions
A free set of EASA Part 66 Module 1 (Mathematics) practice questions with fully worked answers — no account needed. They show the style and difficulty of the full question bank, which holds over 1,000 questions across every Module 1 topic.
1.1 Arithmetic
What is ³⁄₄ of 60?
- 40
- ✓ 45
- 48
Answer: 60 ÷ 4 = 15, then 15 × 3 = 45.
What is 15% of 240?
- 24
- ✓ 36
- 48
Answer: 15% = 0.15, and 0.15 × 240 = 36.
£50 is split in the ratio 2:3. What is the larger share?
- £20
- £25
- ✓ £30
Answer: There are 2 + 3 = 5 parts. 50 ÷ 5 = 10 per part, so the larger share is 3 × 10 = £30.
What is the mean of 4, 8, 10 and 14?
- 8
- ✓ 9
- 10
Answer: Sum = 36, and 36 ÷ 4 = 9.
What is 2⁵?
- 10
- 25
- ✓ 32
Answer: 2 × 2 × 2 × 2 × 2 = 32.
What is the square root of 144?
- ✓ 12
- 14
- 72
Answer: 12 × 12 = 144, so √144 = 12.
1.2 Algebra
Solve for x: 3x + 7 = 22.
- 3
- ✓ 5
- 7
Answer: Subtract 7 from both sides: 3x = 15. Divide by 3: x = 5.
Rearrange v = u + at to make a the subject.
- ✓ a = (v − u)/t
- a = (v + u)/t
- a = v − u − t
Answer: Subtract u from both sides: v − u = at. Divide by t: a = (v − u)/t.
What is the binary number 1011 in decimal?
- 9
- ✓ 11
- 13
Answer: 1011 = (1×8) + (0×4) + (1×2) + (1×1) = 11.
Simplify 2³ × 2².
- ✓ 2⁵
- 2⁶
- 4⁵
Answer: When multiplying powers of the same base, add the indices: 3 + 2 = 5, giving 2⁵.
Solve x² = 49 (take the positive root).
- ✓ 7
- 24.5
- 2401
Answer: x = √49 = 7.
What is log₁₀(1000)?
- 2
- ✓ 3
- 100
Answer: 10³ = 1000, so log₁₀(1000) = 3.
1.3 Geometry & trigonometry
A right-angled triangle has legs 3 cm and 4 cm. What is the length of the hypotenuse?
- ✓ 5 cm
- 7 cm
- 12 cm
Answer: Hypotenuse = √(3² + 4²) = √(9 + 16) = √25 = 5 cm.
What is the area of a triangle with base 10 cm and height 6 cm?
- 16 cm²
- ✓ 30 cm²
- 60 cm²
Answer: Area = ½ × base × height = ½ × 10 × 6 = 30 cm².
What is sin 30°?
- ✓ 0.5
- 0.866
- 1
Answer: sin 30° = 0.5 — one of the standard exact values worth memorising.
Two angles of a triangle are 40° and 60°. What is the third angle?
- ✓ 80°
- 90°
- 100°
Answer: Angles in a triangle sum to 180°: 180 − 40 − 60 = 80°.
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