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Cornerstone · Grades 3–5 Keystones #1 30 July 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 30 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 1⁄4

    Answer: 27⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x + 7 = 62

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 96 in the ratio 2:1

    Answer: 64 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 30, 31, 15, 34, 26, 48. Give your answer to 2 decimal places

    Answer: 30.67

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