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Cornerstone · Grades 3–5 Keystones #1 25 September 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 September 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 3⁄5

    Answer: 27⁄20
  2. 2. Algebra Two-step equations

    Solve: 6x - 14 = 22

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.16cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 1:3

    Answer: 20 and 60
  5. 5. Statistics Mean

    Find the mean of: 19, 3, 8

    Answer: 10

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