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Cornerstone · Grades 3–5 Keystones #1 22 August 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 3⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 55

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 6.71cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 1:2

    Answer: 16 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 50, 45, 12, 27, 23, 13, 17, 7

    Answer: 24.25

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