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Cornerstone · Grades 3–5 Keystones #1 3 November 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 November 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x + 3 = 23

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.54cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 1:2:1

    Answer: 50, 100 and 50
  5. 5. Statistics Mean

    Find the mean of: 4, 6, 18, 8, 9

    Answer: 9

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