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Cornerstone · Grades 3–5 Keystones #1 13 May 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 May 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄11 + 4⁄11

    Answer: 7⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x + 11 = 59

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

    Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 19.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 72 in the ratio 1:4:1

    Answer: 12, 48 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 8, 5, 9, 26, 7, 30, 34

    Answer: 17

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