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Cornerstone · Grades 3–5 Keystones #1 11 November 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 November 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄9 + 2⁄9

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

    Solve: 4x - 13 = 31

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 6cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 20, 41, 6, 33, 5, 45, 49, 32. Give your answer to 2 decimal places

    Answer: 28.88

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