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Cornerstone · Grades 3–5 Keystones #1 21 February 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 February 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 3⁄7

    Answer: 36⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x - 19 = 9

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 7.62cm
  4. 4. Ratio Sharing in a ratio

    Share 64 in the ratio 1:3

    Answer: 16 and 48
  5. 5. Statistics Mean

    Find the mean of: 4, 16, 16

    Answer: 12