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Cornerstone · Grades 3–5 Keystones #1 12 November 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 12 November 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 1⁄10

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

    Solve: 7x - 14 = 77

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 10cm

    Answer: 10.44cm
  4. 4. Ratio Sharing in a ratio

    Share 91 in the ratio 4:3

    Answer: 52 and 39
  5. 5. Statistics Mean

    Find the mean of: 11, 18, 7

    Answer: 12

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