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Cornerstone · Grades 3–5 Keystones #1 20 July 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 July 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 5⁄7

    Answer: 46⁄35
  2. 2. Algebra Two-step equations

    Solve: 7x - 13 = 85

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 4:1

    Answer: 40 and 10
  5. 5. Statistics Mean

    Find the mean of: 9, 7, 8

    Answer: 8

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