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

Five GCSE retrieval questions · 7 September 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄5

    Answer: 19⁄20
  2. 2. Algebra Two-step equations

    Solve: 3x - 7 = 35

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

    Calculate the hypotenuse when a = 3cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.44cm
  4. 4. Ratio Sharing in a ratio

    Share 33 in the ratio 1:2

    Answer: 11 and 22
  5. 5. Statistics Mean

    Find the mean of: 2, 5, 13, 9, 11

    Answer: 8

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