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Cornerstone · Grades 3–5 Keystones #1 19 May 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 2⁄4

    Answer: 11⁄8
  2. 2. Algebra Two-step equations

    Solve: 7x - 12 = 93

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 3:2

    Answer: 54 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 14, 20, 18, 30, 33, 7. Give your answer to 2 decimal places

    Answer: 20.33

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