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Cornerstone · Grades 3–5 Keystones #1 15 September 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 September 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 1⁄4

    Answer: 3⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x + 3 = 48

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 15cm

    Answer: 17.49cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 2:3

    Answer: 34 and 51
  5. 5. Statistics Mean

    Calculate the mean of: 29, 20, 24, 9, 38, 17, 25

    Answer: 23.1

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