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Number · SS1–SS3

Commercial arithmetic

Money in everyday life: profit and loss, interest, discounts, shares, rates and taxes.

Before this
Number foundations & fractions

Learn

  1. 1Percentages, profit and lossPercentage change as a multiplier, profit and loss on the cost price, marked price and discount, working back to the original price, and successive percentage changes.Done16 min
  2. 2Interest, depreciation and growthSimple interest on the original sum, compound interest on the growing amount, depreciation on a reducing value, and finding the principal, rate or time.Done16 min
  3. 3Shares, tax, commission and exchangeSharing profits in the ratio of investment, income tax after allowances, commission, import duty, shares and dividends, foreign exchange and buying by instalments.Done16 min

Practise

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

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Past questions (142)

From 1983–2025: 70 WAEC, 10 NECO, 62 JAMB. Theory questions first, then objective, newest first.

Theory (59)

Objective (83)