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Cornerstone · Grades 3–5 Keystones #1 9 July 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 9 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x + 13 = 33

    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 35 in the ratio 3:4

    Answer: 15 and 20
  5. 5. Statistics Mean

    Find the mean of: 10, 19, 19, 13, 18

    Answer: 15.8

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