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Cornerstone · Grades 3–5 Keystones #1 11 April 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 April 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄3

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x - 5 = 21

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 1:4

    Answer: 7 and 28
  5. 5. Statistics Mean

    Find the mean of: 18, 8, 10

    Answer: 12

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