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Cornerstone · Grades 3–5 Keystones #1 4 March 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 March 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 8x - 9 = 55

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Share 68 in the ratio 3:1

    Answer: 51 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 27, 42, 28, 12, 49, 46, 30, 17. Give your answer to 2 decimal places

    Answer: 31.38

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