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Cornerstone · Grades 3–5 Keystones #1 31 August 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 2⁄3

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x - 15 = 29

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

    Calculate the hypotenuse when a = 9cm and b = 7cm. Give your answer to 2 decimal places

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

    Share 108 in the ratio 1:2

    Answer: 36 and 72
  5. 5. Statistics Mean

    Find the mean of: 9, 12, 16, 4, 9

    Answer: 10

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