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Cornerstone · Grades 3–5 Keystones #1 8 August 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 4⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 7x - 12 = 79

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 9cm

    Answer: 9.49cm
  4. 4. Ratio Sharing in a ratio

    Share 102 in the ratio 2:1

    Answer: 68 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 10, 35, 15, 40, 41, 27

    Answer: 28

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