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Cornerstone · Grades 3–5 Keystones #1 21 April 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 April 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 4⁄10

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

    Solve: 6x + 13 = 55

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 7cm

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 3:1

    Answer: 60 and 20
  5. 5. Statistics Mean

    Find the mean of: 2, 12, 6, 9, 16

    Answer: 9

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