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

  1. 1. Number Adding fractions

    Calculate: 8⁄12 + 2⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 3 = 59

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 32 in the ratio 1:3

    Answer: 8 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 46, 7, 9, 5, 37, 39, 22

    Answer: 23.6

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