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Cornerstone · Grades 3–5 Keystones #1 6 October 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 October 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 47 + 27

    Answer: 67
  2. 2. Algebra Two-step equations

    Solve: 7x - 12 = 93

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 13cm

    Answer: 13.93cm
  4. 4. Ratio Sharing in a ratio

    Share 27 in the ratio 2:1

    Answer: 18 and 9
  5. 5. Statistics Mean

    Calculate the mean of: 14, 47, 32, 41, 6, 28, 50, 25

    Answer: 30.4