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Cornerstone · Grades 3–5 Keystones #1 17 July 2020 Skills week 1 of 7
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Five GCSE retrieval questions · 17 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 2⁄10

    Answer: 3⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x + 8 = 14

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

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 3:2

    Answer: 21 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 22, 13, 27, 41, 36, 36

    Answer: 29.2

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