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Cornerstone · Grades 3–5 Keystones #1 19 March 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 March 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 4x - 8 = 12

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

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 8, 46, 30, 10, 29, 26, 7. Give your answer to 2 decimal places

    Answer: 22.29

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