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Cornerstone · Grades 3–5 Keystones #1 1 January 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 January 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 8⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 19 = 21

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Share 57 in the ratio 2:1

    Answer: 38 and 19
  5. 5. Statistics Mean

    Find the mean of: 7, 14, 9

    Answer: 10

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