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Cornerstone · Grades 3–5 Keystones #1 14 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x + 4 = 24

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Share 52 in the ratio 1:3

    Answer: 13 and 39
  5. 5. Statistics Mean

    Find the mean of: 21, 3, 6

    Answer: 10

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