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Cornerstone · Grades 3–5 Keystones #1 13 December 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 13 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 5⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x + 14 = 50

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 2:1

    Answer: 28 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 26, 26, 9, 13, 17, 45, 37, 36. Give your answer to 2 decimal places

    Answer: 26.13

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