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Cornerstone · Grades 3–5 Keystones #1 6 March 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 March 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 1⁄4

    Answer: 27⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 48

    Answer: x = 8
  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 15 in the ratio 2:1

    Answer: 10 and 5
  5. 5. Statistics Mean

    Find the mean of: 3, 11, 18, 10, 18

    Answer: 12

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