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Cornerstone · Grades 3–5 Keystones #1 7 August 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 7 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x - 7 = 37

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 2:3

    Answer: 22 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 21, 24, 38, 37, 11, 48, 49, 34

    Answer: 32.75

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