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

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

  1. 1. Number Adding fractions

    Add: 1⁄3 + 7⁄8

    Answer: 29⁄24
  2. 2. Algebra Two-step equations

    Solve: 6x - 5 = 25

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 11cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 184 in the ratio 4:1:3

    Answer: 92, 23 and 69
  5. 5. Statistics Mean

    Find the mean of: 13, 20, 16, 3, 8

    Answer: 12

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