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Cornerstone · Grades 3–5 Keystones #1 14 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 5 = 33

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 7cm

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 4:1:2

    Answer: 88, 22 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 18, 31, 10, 45, 25, 9, 19

    Answer: 22.4

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