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Cornerstone · Grades 3–5 Keystones #1 2 September 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 September 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 3x - 10 = 32

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 1:4

    Answer: 17 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 8, 6, 43, 44, 34, 41, 47, 8. Give your answer to 2 decimal places

    Answer: 28.88

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