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Cornerstone · Grades 3–5 Keystones #1 31 December 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 31 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 10 = 54

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

    Calculate the hypotenuse when a = 6cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 8.49cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 1:4

    Answer: 11 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 13, 36, 6, 16, 45, 25, 42. Give your answer to 2 decimal places

    Answer: 26.14

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