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Cornerstone · Grades 3–5 Keystones #1 16 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 6x + 8 = 38

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 4cm

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Share 15 in the ratio 2:1

    Answer: 10 and 5
  5. 5. Statistics Mean

    Calculate the mean of: 39, 42, 28, 33, 34, 49, 16, 50

    Answer: 36.4

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