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Cornerstone · Grades 3–5 Keystones #1 23 June 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 1⁄6

    Answer: 23⁄30
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 56

    Answer: x = 11
  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 253 in the ratio 4:4:3

    Answer: 92, 92 and 69
  5. 5. Statistics Mean

    Calculate the mean of: 20, 19, 9, 32, 36, 26, 44, 28

    Answer: 26.8

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