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Cornerstone · Grades 3–5 Keystones #1 26 December 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 December 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 6⁄8

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x - 14 = 14

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Share 84 in the ratio 2:1

    Answer: 56 and 28
  5. 5. Statistics Mean

    Find the mean of: 25, 2, 18, 3, 12

    Answer: 12

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