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Cornerstone · Grades 3–5 Keystones #1 26 November 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 26 November 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x + 11 = 95

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

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 2:3

    Answer: 20 and 30
  5. 5. Statistics Mean

    Find the mean of: 6, 2, 14, 8, 16

    Answer: 9.2

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