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Cornerstone · Grades 3–5 Keystones #1 8 June 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x - 17 = 18

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

    Calculate the hypotenuse when a = 10cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.03cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 1:4

    Answer: 13 and 52
  5. 5. Statistics Mean

    Find the mean of: 19, 13, 10

    Answer: 14

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