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Cornerstone · Grades 3–5 Keystones #1 25 June 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 25 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 2⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 7x - 17 = 67

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.8cm
  4. 4. Ratio Sharing in a ratio

    Share 25 in the ratio 1:4

    Answer: 5 and 20
  5. 5. Statistics Mean

    Find the mean of: 8, 7, 20, 5

    Answer: 10

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