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Cornerstone · Grades 3–5 Keystones #1 17 August 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 4⁄5

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

    Solve: 5x - 17 = 58

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Share 21 in the ratio 2:1

    Answer: 14 and 7
  5. 5. Statistics Mean

    Find the mean of: 10, 19, 16, 4, 16

    Answer: 13

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