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Cornerstone · Grades 3–5 Keystones #1 21 August 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 August 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 4⁄8

    Answer: 13⁄14
  2. 2. Algebra Two-step equations

    Solve: 4x + 4 = 44

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 15cm

    Answer: 16.55cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 3:3:2

    Answer: 72, 72 and 48
  5. 5. Statistics Mean

    Find the mean of: 14, 14, 16, 5

    Answer: 12.25

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