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Cornerstone · Grades 3–5 Keystones #1 17 August 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 3⁄5

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

    Solve: 6x + 8 = 50

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 7cm

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 147 in the ratio 3:3:1

    Answer: 63, 63 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 19, 35, 10, 30, 41, 25, 18, 48

    Answer: 28.3

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