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Cornerstone · Grades 3–5 Keystones #1 29 November 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 29 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 1⁄3

    Answer: 14⁄15
  2. 2. Algebra Two-step equations

    Solve: 2x + 6 = 22

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

    Calculate the hypotenuse when a = 3cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.44cm
  4. 4. Ratio Sharing in a ratio

    Share 64 in the ratio 3:1

    Answer: 48 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 40, 17, 11, 39, 28, 13, 42. Give your answer to 2 decimal places

    Answer: 27.14

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