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Cornerstone · Grades 3–5 Keystones #1 26 August 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 26 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 3⁄9

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

    Solve: 7x + 13 = 69

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 21, 15, 12, 44, 8, 34, 48

    Answer: 26

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