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Cornerstone · Grades 3–5 Keystones #1 24 December 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 24 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 2⁄8

    Answer: 3⁄8
  2. 2. Algebra Two-step equations

    Solve: 8x - 10 = 110

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Share 77 in the ratio 3:4

    Answer: 33 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 36, 32, 42, 21, 28, 30

    Answer: 31.5

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