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Cornerstone · Grades 3–5 Keystones #1 6 July 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 6 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 4⁄9

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 7x + 9 = 86

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 10cm

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Divide 130 in the ratio 3:1:1

    Answer: 78, 26 and 26
  5. 5. Statistics Mean

    Find the mean of: 7, 18, 8, 2, 2

    Answer: 7.4

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