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Cornerstone · Grades 3–5 Keystones #1 13 October 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 October 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 5x - 11 = 34

    Answer: x = 9
  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 35 in the ratio 4:3

    Answer: 20 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 16, 30, 14, 13, 42, 49, 17. Give your answer to 2 decimal places

    Answer: 25.86

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