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

Five GCSE retrieval questions · 1 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄5

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 5x + 3 = 38

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 10cm

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 2:3

    Answer: 12 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 20, 14, 16, 43, 10, 27, 37, 42

    Answer: 26.1

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