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Cornerstone · Grades 3–5 Keystones #1 16 August 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x + 9 = 69

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

    Calculate the hypotenuse when a = 11cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 15.56cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 42, 30, 35, 6, 39, 33, 50. Give your answer to 2 decimal places

    Answer: 33.57

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