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Cornerstone · Grades 3–5 Keystones #1 21 November 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 21 November 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 2⁄6

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 6x + 8 = 62

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 46, 24, 13, 43, 46, 13, 35. Give your answer to 2 decimal places

    Answer: 31.43

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