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Cornerstone · Grades 3–5 Keystones #1 8 August 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 1⁄5

    Answer: 22⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x - 11 = 14

    Answer: x = 5
  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

    Divide 120 in the ratio 2:1:3

    Answer: 40, 20 and 60
  5. 5. Statistics Mean

    Find the mean of: 7, 25, 2, 10, 11

    Answer: 11

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