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Cornerstone · Grades 3–5 Keystones #1 16 February 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 February 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄8 + 3⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x - 17 = 35

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 1:4:2

    Answer: 24, 96 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 41, 37, 44, 13, 34, 24, 47, 6

    Answer: 30.75

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