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

Five GCSE retrieval questions · 5 May 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄8

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 7x + 7 = 56

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 4:1

    Answer: 40 and 10
  5. 5. Statistics Mean

    Find the mean of: 13, 14, 12

    Answer: 13

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