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Cornerstone · Grades 3–5 Keystones #1 18 October 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 October 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x - 6 = 16

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 8cm

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Share 64 in the ratio 1:3

    Answer: 16 and 48
  5. 5. Statistics Mean

    Find the mean of: 9, 16, 17

    Answer: 14

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