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

Five GCSE retrieval questions · 5 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 6⁄8

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 2x - 13 = 15

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Share 100 in the ratio 2:3

    Answer: 40 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 5, 43, 24, 17, 28, 18, 48, 49

    Answer: 29

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