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Cornerstone · Grades 3–5 Keystones #1 16 June 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 June 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄6

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 7

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.54cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 3:4

    Answer: 15 and 20
  5. 5. Statistics Mean

    Find the mean of: 9, 8, 8, 11

    Answer: 9