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Cornerstone · Grades 3–5 Keystones #1 15 August 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 August 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 4⁄8

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 24

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

    Calculate the hypotenuse when a = 12cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 17.69cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 40, 45, 46, 6, 6, 30, 31, 37. Give your answer to 2 decimal places

    Answer: 30.13

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