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Cornerstone · Grades 3–5 Keystones #1 14 January 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 14 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x + 13 = 37

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  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: 9, 15, 11, 17

    Answer: 13

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