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Cornerstone · Grades 3–5 Keystones #1 10 January 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 10 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 6⁄8

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

    Solve: 2x + 10 = 30

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 11cm. Give your answer to 2 decimal places

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

    Share 28 in the ratio 1:3

    Answer: 7 and 21
  5. 5. Statistics Mean

    Find the mean of: 13, 12, 8

    Answer: 11

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