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

  1. 1. Number Adding fractions

    Calculate: 6⁄12 + 3⁄12

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

    Solve: 7x - 6 = 29

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

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

    Share 25 in the ratio 3:2

    Answer: 15 and 10
  5. 5. Statistics Mean

    Find the mean of: 11, 15, 11, 5, 11

    Answer: 10.6

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