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Cornerstone · Grades 3–5 Keystones #1 9 November 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 November 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 2⁄3

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

    Solve: 2x - 9 = 5

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

    Calculate the hypotenuse when a = 10cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.03cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 1:4

    Answer: 8 and 32
  5. 5. Statistics Mean

    Find the mean of: 7, 12, 2

    Answer: 7

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