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Cornerstone · Grades 3–5 Keystones #1 17 January 2023 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 January 2023 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

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

    Solve: 4x + 11 = 27

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 4:3

    Answer: 76 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 41, 33, 47, 48, 31, 13, 40

    Answer: 36.1

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