Stepwise
Start practisingPractise

Number · SS1

Indices & standard form

The laws of indices and writing very large or very small numbers in standard form.

Before this
Number foundations & fractions
Leads to
LogarithmsSurdsIndices, logarithms & surds

Learn

  1. 1The laws of indicesWhy you add indices when multiplying and subtract when dividing, what zero, negative and fractional indices mean, and evaluating powers of fractions and decimals.Done20 min
  2. 2Equations with indicesSolving equations where the unknown is in the index: make the bases the same and compare indices, factor out a common power, spot a hidden quadratic, undo a power on the unknown, and solve two such equations together.Done20 min
  3. 3Standard formWriting very large and very small numbers as A × 10ⁿ, multiplying and dividing in standard form, and simplifying decimals without a calculator.Done14 min

Practise

Answer indices & standard form questions one at a time. You'll know straight away whether you're right, with hints and the working step by step.

Your progress is saved on this device as you practise. No account needed.

Start practising

Past questions (82)

From 1983–2025: 28 WAEC, 6 NECO, 48 JAMB. Theory questions first, then objective, newest first.

Theory (17)

Objective (65)