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Cornerstone · Grades 3–5 Keystones #1 30 June 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 5⁄7

    Answer: 32⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x + 9 = 45

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 3:2

    Answer: 39 and 26
  5. 5. Statistics Mean

    Find the mean of: 9, 15, 14, 14

    Answer: 13

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