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Cornerstone · Grades 3–5 Keystones #1 9 February 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 February 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 6⁄8

    Answer: 5⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 43

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 44 in the ratio 3:1

    Answer: 33 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 47, 31, 29, 22, 49, 13, 42. Give your answer to 2 decimal places

    Answer: 33.29

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