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Cornerstone · Grades 3–5 Keystones #1 8 March 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 30

    Answer: x = 6
  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 112 in the ratio 4:3

    Answer: 64 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 25, 45, 9, 13, 47, 30. Give your answer to 2 decimal places

    Answer: 28.17