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Cornerstone · Grades 3–5 Keystones #1 16 April 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 1⁄5

    Answer: 33⁄40
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 31

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 15cm

    Answer: 18.03cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 3:2

    Answer: 39 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 27, 9, 25, 5, 25, 14, 6, 20

    Answer: 16.4

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