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Cornerstone · Grades 3–5 Keystones #1 22 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄12 + 1⁄12

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

    Solve: 5x - 18 = 57

    Answer: x = 15
  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 100 in the ratio 2:3

    Answer: 40 and 60
  5. 5. Statistics Mean

    Find the mean of: 15, 17, 16, 12

    Answer: 15

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