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Cornerstone · Grades 3–5 Keystones #1 10 April 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 2⁄8

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 68

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

    Calculate the hypotenuse when a = 12cm and b = 8cm

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 1:2

    Answer: 30 and 60
  5. 5. Statistics Mean

    Find the mean of: 14, 6, 3

    Answer: 7.6666666666667

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