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Cornerstone · Grades 3–5 Keystones #1 23 October 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 October 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄4

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x + 11 = 23

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 4cm

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 182 in the ratio 3:3:1

    Answer: 78, 78 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 45, 30, 20, 24, 18, 50, 48, 31

    Answer: 33.3

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