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Cornerstone · Grades 3–5 Keystones #1 10 June 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 June 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 1⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 8x - 13 = 43

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 14cm

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 2:1:2

    Answer: 36, 18 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 21, 9, 24, 41, 27, 37

    Answer: 26.5

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