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Cornerstone · Grades 3–5 Keystones #1 21 April 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 3⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 8 = 24

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 117 in the ratio 4:4:1

    Answer: 52, 52 and 13
  5. 5. Statistics Mean

    Calculate the mean of: 46, 21, 24, 30, 36, 42. Give your answer to 2 decimal places

    Answer: 33.17

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