What standard form means

Decimal point movement diagram showing 6.38 moving 3 places right to make 6380 and 2 places left to make 0.0638, with the rule a x 10^n where 1 <= a < 10

Standard form is built from powers of 10. Multiplying by $10^n$ moves the decimal point right if $n$ is positive and left if $n$ is negative.

Standard Form Lesson

IGCSE
Maths
Standard Form

Step-by-step lessons covering Edexcel IGCSE Maths Standard Form for IGCSE Maths. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Build confidence with the shared Foundation-tier content first, since roughly 40% of Higher-tier marks are targeted at the grades 4–5 boundary that both tiers have in common.

Lessons

Reverse PercentagesStandard FormSpeed and DensityChanging the Subject of a FormulaExpanding and Factorising QuadraticsSolving QuadraticsDrawing Quadratic GraphsSimultaneous EquationsSimilar Shapes (Lengths)SOHCAHTOA (Trigonometry)Venn DiagramsData

What standard form means

Decimal point movement diagram showing 6.38 moving 3 places right to make 6380 and 2 places left to make 0.0638, with the rule a x 10^n where 1 <= a < 10

Standard form is built from powers of 10. Multiplying by $10^n$ moves the decimal point right if $n$ is positive and left if $n$ is negative.

Standard Form Lesson

IGCSE
Maths
Standard Form