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Cornerstone · Grades 3–5 Keystones #1 16 January 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 6⁄7

    Answer: 51⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x - 17 = 33

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Share 108 in the ratio 1:2

    Answer: 36 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 35, 10, 11, 46, 13, 50

    Answer: 27.5

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