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A worked question

About a minute each. The question, time to think, then how to do it and the mistake to avoid.

  • Mean: working with totals

    Finding a missing value from how the mean changes.

Data practice
No timer
Foundation questions. No timer: check each answer as you go, then read the explanation.
1. A table shows how many visitors a museum had: Mon 80, Tue 72, Wed 48, Thu 78, Fri 31. How many more visitors came on the busiest day than on the quietest?

These 10 are free

Every topic gives you 10 questions to try, at any level, with the full explanation on each one. A subscription opens the rest — and in the maths topics the questions are generated, so they never run out and never repeat.