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Cornerstone · Grades 3–5 Keystones #1 2 September 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 3⁄4

    Answer: 33⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x - 9 = 16

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 39 in the ratio 2:1

    Answer: 26 and 13
  5. 5. Statistics Mean

    Calculate the mean of: 35, 16, 34, 15, 38, 43, 12. Give your answer to 2 decimal places

    Answer: 27.57

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