Module 1 / 1.2 Algebra
EASA Part 66 Module 1.2 — Algebra
Algebra (sub-module 1.2) is about manipulating symbols and equations. The single most useful skill here is transposition — rearranging a formula to make a different quantity the subject — because you will use it throughout the licence whenever you need to solve for an unknown. This section also covers indices, number systems (binary, octal and hexadecimal) and logarithms.
What's covered
- Evaluating simple algebraic expressions
- Algebraic fractions
- Linear equations and their solutions
- Transposition of formulae
- Indices and powers, including the index laws
- Simultaneous equations
- Second-degree (quadratic) equations
- Number systems: binary, octal and hexadecimal
- Logarithms
Worked examples
Make r the subject of C = 2πr.
Divide both sides by 2π: r = C / (2π).
Solve the simultaneous equations x + y = 10 and x − y = 4.
Add the equations: 2x = 14, so x = 7. Substitute back: 7 + y = 10, so y = 3.
Convert the hexadecimal number 1A to decimal.
1A = (1 × 16) + (10 × 1) = 16 + 10 = 26.
Exam tips
- Whatever you do to one side of an equation, do to the other — that one rule underpins every rearrangement.
- Memorise the index laws (add indices to multiply, subtract to divide, multiply to raise a power to a power).
- For number systems, know your place values: powers of 2 for binary, powers of 16 for hexadecimal.
Practise algebra questions
The question bank has hundreds of Module 1.2 algebra questions, each with a worked explanation and graded by difficulty.
Independent practice material, not affiliated with EASA. Check the current official EASA Part 66 syllabus for the definitive scope.