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Cornerstone · Grades 3–5 Keystones #1 31 August 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 31 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 3⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 17 = 55

    Answer: x = 12
  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 70 in the ratio 3:4

    Answer: 30 and 40
  5. 5. Statistics Mean

    Find the mean of: 2, 2, 6

    Answer: 3.3333333333333

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