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Cornerstone · Grades 3–5 Keystones #1 10 January 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 January 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 2⁄6

    Answer: 17⁄24
  2. 2. Algebra Two-step equations

    Solve: 5x - 16 = 39

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 6.71cm
  4. 4. Ratio Sharing in a ratio

    Share 91 in the ratio 4:3

    Answer: 52 and 39
  5. 5. Statistics Mean

    Find the mean of: 14, 19, 14, 13, 10

    Answer: 14

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