Missing-number equations
Work out the value of ? in the equation, then select one of five answers.
What it tests
Fast, accurate mental arithmetic: multiplication, division, percentages, fractions and the order of operations.
Common pitfalls
- Working left to right instead of × and ÷ before + and −
- Reading a square as × 2: 7² is 49, not 14
- Applying a percentage to the wrong base number
Tip: Solve the equation step by step and check the result against every term in it before you choose.
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