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Cornerstone · Grades 3–5 Keystones #1 3 October 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 4⁄8

    Answer: 13⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x - 14 = 10

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 1:3

    Answer: 10 and 30
  5. 5. Statistics Mean

    Find the mean of: 15, 5, 6, 18

    Answer: 11

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