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Cornerstone · Grades 3–5 Keystones #1 13 June 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 1⁄7

    Answer: 9⁄14
  2. 2. Algebra Two-step equations

    Solve: 8x - 18 = 94

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 78 in the ratio 1:2

    Answer: 26 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 34, 17, 48, 28, 41, 50, 18, 17. Give your answer to 2 decimal places

    Answer: 31.63

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