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Cornerstone · Grades 3–5 Keystones #1 18 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 6⁄7

    Answer: 31⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x - 17 = 58

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 4cm

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 3:1

    Answer: 54 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 23, 22, 35, 6, 25, 24, 46, 29

    Answer: 26.3

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