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Cornerstone · Grades 3–5 Keystones #1 22 April 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 April 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x - 9 = 13

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 1:4

    Answer: 13 and 52
  5. 5. Statistics Mean

    Find the mean of: 5, 13, 15

    Answer: 11

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