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Cornerstone · Grades 3–5 Keystones #1 25 May 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 May 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x + 11 = 27

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

    Calculate the hypotenuse when a = 6cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Share 15 in the ratio 1:2

    Answer: 5 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 12, 16, 39, 7, 5, 42, 40

    Answer: 23

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