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Cornerstone · Grades 3–5 Keystones #1 8 September 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 September 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 6x - 5 = 43

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Share 27 in the ratio 2:1

    Answer: 18 and 9
  5. 5. Statistics Mean

    Find the mean of: 8, 9, 10

    Answer: 9

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