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Cornerstone · Grades 3–5 Keystones #1 20 November 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 November 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 4⁄6

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x - 16 = 75

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 3:2

    Answer: 30 and 20
  5. 5. Statistics Mean

    Find the mean of: 10, 11, 9

    Answer: 10

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