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Cornerstone · Grades 3–5 Keystones #1 11 June 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 June 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 5⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x + 3 = 27

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 4cm

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 4:3

    Answer: 20 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 27, 43, 21, 46, 26, 16

    Answer: 29.8

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