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Cornerstone · Grades 3–5 Keystones #1 20 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 2⁄4

    Answer: 15⁄14
  2. 2. Algebra Two-step equations

    Solve: 4x - 19 = 41

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

    Calculate the hypotenuse when a = 3cm and b = 14cm

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Share 64 in the ratio 1:3

    Answer: 16 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 36, 41, 20, 15, 24, 28

    Answer: 27.3

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