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Cornerstone · Grades 3–5 Keystones #1 4 November 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 November 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 3⁄7

    Answer: 16⁄21
  2. 2. Algebra Two-step equations

    Solve: 7x - 9 = 96

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

    Calculate the hypotenuse when a = 5cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 4:1

    Answer: 56 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 9, 24, 45, 6, 33, 15, 18, 26

    Answer: 22

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