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Cornerstone · Grades 3–5 Keystones #1 12 March 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x + 11 = 59

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 1:3

    Answer: 6 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 11, 24, 5, 12, 31, 50, 15. Give your answer to 2 decimal places

    Answer: 21.14

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