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Cornerstone · Grades 3–5 Keystones #1 14 February 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 14 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 1⁄6

    Answer: 1⁄3
  2. 2. Algebra Two-step equations

    Solve: 7x + 7 = 49

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 2:3

    Answer: 18 and 27
  5. 5. Statistics Mean

    Find the mean of: 18, 13, 2, 13, 2

    Answer: 9.6

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