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

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

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄8

    Answer: 25⁄24
  2. 2. Algebra Two-step equations

    Solve: 7x - 8 = 90

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 5cm

    Answer: 5.83cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 1:3:2

    Answer: 20, 60 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 18, 17, 48, 14, 47, 7, 31

    Answer: 26

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