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

Five GCSE retrieval questions · 1 June 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 3⁄6

    Answer: 19⁄14
  2. 2. Algebra Two-step equations

    Solve: 3x - 20 = 22

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 12cm

    Answer: 12.37cm
  4. 4. Ratio Sharing in a ratio

    Divide 66 in the ratio 3:2:1

    Answer: 33, 22 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 10, 30, 34, 32, 41, 6, 46, 20

    Answer: 27.4

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