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Cornerstone · Grades 3–5 Keystones #1 15 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄10 + 5⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x + 3 = 57

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 1:3

    Answer: 14 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 32, 18, 27, 9, 15, 45, 38, 38

    Answer: 27.8