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Cornerstone · Grades 3–5 Keystones #1 17 June 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 June 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 6⁄7

    Answer: 25⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x - 15 = 50

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 175 in the ratio 2:4:1

    Answer: 50, 100 and 25
  5. 5. Statistics Mean

    Find the mean of: 13, 11, 9, 7

    Answer: 10

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