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Cornerstone · Grades 3–5 Keystones #1 4 November 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 November 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄10 + 3⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x - 12 = 28

    Answer: x = 10
  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 250 in the ratio 2:2:1

    Answer: 100, 100 and 50
  5. 5. Statistics Mean

    Calculate the mean of: 24, 8, 9, 13, 23, 10

    Answer: 14.5

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