2.3 Expressions and formulae
- Syllabus
- 2017
- Topic
- 2.3
- Level
- Foundation
2.3.A Unknowns and variables
understand that a letter may represent an unknown number or a variable
2.3.B Correct notational conventions for algebraic
use correct notational conventions for algebraic expressions and formulae
2.3.C Substitution in expressions and formulae
substitute positive and negative integers, decimals and fractions for words and letters in expressions and formulae Evaluate 2x – 3y when x = 4 and y = −5
2.3.D Formulae from mathematics and other real-life contexts
use formulae from mathematics and other real-life contexts expressed initially in words or diagrammatic form and convert to letters and symbols
2.3.E Derive a formula or expression
derive a formula or expression
2.3.F Changing the subject of a formula
change the subject of a formula where the subject appears once
2.3.HA Advanced changes of subject
manipulate formulae or equations to change the subject, including cases where the subject appears twice or a power of the subject occurs
Objective notes
6 learning objectivesConceptIGCSE Math A Foundation