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

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

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 3⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x - 12 = 28

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 2:3

    Answer: 12 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 50, 21, 50, 48, 18, 23, 43. Give your answer to 2 decimal places

    Answer: 36.14

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