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Cornerstone · Grades 3–5 Keystones #1 12 September 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 September 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 1⁄3

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

    Solve: 5x + 10 = 25

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

    Calculate the hypotenuse when a = 5cm and b = 8cm

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Divide 80 in the ratio 1:1:2

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

    Find the mean of: 14, 5, 7, 8, 20

    Answer: 10.8

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