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Cornerstone · Grades 3–5 Keystones #1 29 June 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 29 June 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 1⁄7

    Answer: 41⁄42
  2. 2. Algebra Two-step equations

    Solve: 5x - 6 = 64

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

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

    Divide 96 in the ratio 1:2:3

    Answer: 16, 32 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 39, 34, 38, 6, 21, 40, 40, 19. Give your answer to 2 decimal places

    Answer: 29.63

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