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Cornerstone · Grades 3–5 Keystones #1 12 June 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 June 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 6x - 11 = 61

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

    Calculate the hypotenuse when a = 8cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics Mean

    Find the mean of: 17, 14, 3, 19, 12

    Answer: 13

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