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Cornerstone · Grades 3–5 Keystones #1 2 April 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 1⁄4

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

    Solve: 2x + 11 = 27

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

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

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

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 15, 36, 18, 29, 24, 28, 29. Give your answer to 2 decimal places

    Answer: 25.57

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