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Cornerstone · Grades 3–5 Keystones #1 6 September 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 2⁄5

    Answer: 17⁄30
  2. 2. Algebra Two-step equations

    Solve: 5x - 14 = 31

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

    Calculate the hypotenuse when a = 6cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 3:1:2

    Answer: 45, 15 and 30
  5. 5. Statistics Mean

    Find the mean of: 4, 24, 6, 14, 17

    Answer: 13

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