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Cornerstone · Grades 3–5 Keystones #1 15 July 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 3⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 5x - 7 = 38

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 9cm

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 4:2:1

    Answer: 40, 20 and 10
  5. 5. Statistics Mean

    Find the mean of: 6, 11, 13, 8

    Answer: 9.5

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