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Cornerstone · Grades 3–5 Keystones #1 24 April 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 1⁄5

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 6x + 4 = 76

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.8cm
  4. 4. Ratio Sharing in a ratio

    Share 77 in the ratio 3:4

    Answer: 33 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 50, 23, 35, 12, 37, 34, 42, 47

    Answer: 35

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