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Cornerstone · Grades 3–5 Keystones #1 21 November 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 November 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 2x + 5 = 17

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 2:2:1

    Answer: 60, 60 and 30
  5. 5. Statistics Mean

    Find the mean of: 18, 13, 2, 2, 20

    Answer: 11

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