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Cornerstone · Grades 3–5 Keystones #1 21 February 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 2⁄3

    Answer: 17⁄21
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 22

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 11cm. Give your answer to 2 decimal places

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

    Divide 140 in the ratio 2:3:2

    Answer: 40, 60 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 46, 24, 21, 50, 50, 30. Give your answer to 2 decimal places

    Answer: 36.83

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