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Cornerstone · Grades 3–5 Keystones #1 17 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 1⁄8

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

    Solve: 4x - 11 = 9

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

    Calculate the hypotenuse when a = 7cm and b = 5cm

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 2:1

    Answer: 60 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 20, 7, 36, 10, 36, 31, 23, 32

    Answer: 24.4

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