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Cornerstone · Grades 3–5 Keystones #1 31 October 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 October 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x + 4 = 10

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

    Calculate the hypotenuse when a = 3cm and b = 7cm

    Answer: 7.62cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 3:1

    Answer: 27 and 9
  5. 5. Statistics Mean

    Calculate the mean of: 29, 25, 39, 42, 32, 27

    Answer: 32.3

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