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Cornerstone · Grades 3–5 Keystones #1 29 March 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 March 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 3⁄6

    Answer: 13⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 44

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

    Calculate the hypotenuse when a = 12cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 17.69cm
  4. 4. Ratio Sharing in a ratio

    Share 126 in the ratio 3:4

    Answer: 54 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 36, 26, 40, 6, 26, 10, 6, 33. Give your answer to 2 decimal places

    Answer: 22.88

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