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Cornerstone · Grades 3–5 Keystones #1 2 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 17 = 23

    Answer: x = 5
  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 126 in the ratio 4:3

    Answer: 72 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 5, 20, 30, 26, 33, 39, 20, 37

    Answer: 26.3

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