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Cornerstone · Grades 3–5 Keystones #1 15 December 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄6

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

    Solve: 4x - 14 = 42

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

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 4:3:2

    Answer: 120, 90 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 17, 29, 43, 39, 23, 35, 26. Give your answer to 2 decimal places

    Answer: 30.29

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