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Cornerstone · Grades 3–5 Keystones #1 7 June 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄5

    Answer: 16⁄15
  2. 2. Algebra Two-step equations

    Solve: 3x - 20 = -8

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

    Calculate the hypotenuse when a = 4cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 4:1

    Answer: 24 and 6
  5. 5. Statistics Mean

    Find the mean of: 12, 3, 16, 5, 14

    Answer: 10

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