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Cornerstone · Grades 3–5 Keystones #1 18 June 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄11 + 2⁄11

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

    Solve: 8x - 20 = 84

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 6.71cm
  4. 4. Ratio Sharing in a ratio

    Divide 252 in the ratio 4:1:4

    Answer: 112, 28 and 112
  5. 5. Statistics Mean

    Find the mean of: 6, 14, 7, 14, 4

    Answer: 9

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