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Cornerstone · Grades 3–5 Keystones #1 14 July 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 14 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 2x + 14 = 28

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

    Calculate the hypotenuse when a = 7cm and b = 5cm

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 43, 50, 30, 47, 46, 16, 26, 35

    Answer: 36.6

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