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Cornerstone · Grades 3–5 Keystones #1 3 August 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 August 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x + 3 = 24

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 19.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 99 in the ratio 3:4:2

    Answer: 33, 44 and 22
  5. 5. Statistics Mean

    Find the mean of: 13, 3, 11

    Answer: 9

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