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Cornerstone · Grades 3–5 Keystones #1 8 July 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 3⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 8x - 20 = 20

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

    Calculate the hypotenuse when a = 3cm and b = 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 3:1

    Answer: 45 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 8, 37, 32, 16, 49, 9

    Answer: 25.2

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