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Cornerstone · Grades 3–5 Keystones #1 30 September 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 7⁄8

    Answer: 97⁄56
  2. 2. Algebra Two-step equations

    Solve: 4x - 17 = 3

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 3:2

    Answer: 24 and 16
  5. 5. Statistics Mean

    Find the mean of: 10, 5, 7, 10

    Answer: 8

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