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Cornerstone · Grades 3–5 Keystones #1 14 August 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 1⁄4

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 6x + 9 = 81

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 5.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 72 in the ratio 2:3:1

    Answer: 24, 36 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 45, 21, 33, 44, 31, 23. Give your answer to 2 decimal places

    Answer: 32.83

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