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Cornerstone · Grades 3–5 Keystones #1 19 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

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

    Solve: 6x - 9 = 63

    Answer: x = 12
  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 24 in the ratio 3:1

    Answer: 18 and 6
  5. 5. Statistics Mean

    Find the mean of: 14, 13, 8, 8, 12

    Answer: 11

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