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Cornerstone · Grades 3–5 Keystones #1 26 March 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄11 + 6⁄11

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

    Solve: 3x - 7 = 17

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.55cm
  4. 4. Ratio Sharing in a ratio

    Share 75 in the ratio 1:4

    Answer: 15 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 38, 44, 17, 25, 34, 40

    Answer: 33

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