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Cornerstone · Grades 3–5 Keystones #1 13 November 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 November 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄6

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

    Solve: 6x + 9 = 81

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Divide 147 in the ratio 4:1:2

    Answer: 84, 21 and 42
  5. 5. Statistics Mean

    Find the mean of: 18, 6, 18

    Answer: 14

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