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Cornerstone · Grades 3–5 Keystones #1 8 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 4⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 7x + 14 = 70

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 10cm

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 2:3

    Answer: 34 and 51
  5. 5. Statistics Mean

    Find the mean of: 12, 7, 19, 2, 8

    Answer: 9.6

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