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

Five GCSE retrieval questions · 5 August 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 7⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 7x + 12 = 47

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

    Calculate the hypotenuse when a = 7cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 3:3:2

    Answer: 60, 60 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 45, 20, 23, 34, 10, 8, 21

    Answer: 23

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