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Cornerstone · Grades 3–5 Keystones #1 9 June 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 June 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄4

    Answer: 21⁄20
  2. 2. Algebra Two-step equations

    Solve: 3x - 7 = 26

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 3:1

    Answer: 18 and 6
  5. 5. Statistics Mean

    Calculate the mean of: 44, 17, 23, 37, 9, 50, 39. Give your answer to 2 decimal places

    Answer: 31.29

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