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Cornerstone · Grades 3–5 Keystones #1 19 September 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 19 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄12 + 4⁄12

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

    Solve: 5x + 6 = 36

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 3:2

    Answer: 48 and 32
  5. 5. Statistics Mean

    Find the mean of: 2, 13, 13, 19

    Answer: 11.75

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