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Cornerstone · Grades 3–5 Keystones #1 29 April 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 29 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 4⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 2x + 5 = 27

    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: 13, 14, 35, 32, 5, 35

    Answer: 22.3

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