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Cornerstone · Grades 3–5 Keystones #1 24 November 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 24 November 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 4x - 16 = 28

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 5, 45, 44, 29, 35, 47, 5

    Answer: 30

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