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Cornerstone · Grades 3–5 Keystones #1 28 December 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 December 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 6⁄7

    Answer: 51⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 53

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

    Calculate the hypotenuse when a = 7cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 104 in the ratio 1:3:4

    Answer: 13, 39 and 52
  5. 5. Statistics Mean

    Find the mean of: 16, 3, 2, 22, 7

    Answer: 10

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