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Cornerstone · Grades 3–5 Keystones #1 8 October 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 October 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 2⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 5x + 15 = 55

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

    Calculate the hypotenuse when a = 5cm and b = 9cm

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 1:4

    Answer: 7 and 28
  5. 5. Statistics Mean

    Find the mean of: 10, 12, 8, 18, 8

    Answer: 11.2

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