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Cornerstone · Grades 3–5 Keystones #1 17 November 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 17 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 1⁄7

    Answer: 3⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x + 13 = 79

    Answer: x = 11
  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 114 in the ratio 2:1

    Answer: 76 and 38
  5. 5. Statistics Mean

    Find the mean of: 11, 12, 5, 8

    Answer: 9

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