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Cornerstone · Grades 3–5 Keystones #1 27 January 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 January 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 4⁄6

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

    Solve: 5x + 5 = 50

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 1:2

    Answer: 30 and 60
  5. 5. Statistics Mean

    Find the mean of: 2, 21, 7

    Answer: 10

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