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Cornerstone · Grades 3–5 Keystones #1 28 February 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 28 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 1⁄4

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 6x - 19 = 65

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 112 in the ratio 3:4

    Answer: 48 and 64
  5. 5. Statistics Mean

    Calculate the mean of: 35, 14, 42, 50, 41, 30, 36, 28

    Answer: 34.5

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