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

Five GCSE retrieval questions · 1 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 3⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x + 8 = 26

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 10cm

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Share 21 in the ratio 1:2

    Answer: 7 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 38, 14, 35, 43, 40, 26, 36

    Answer: 33.1

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