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Cornerstone · Grades 3–5 Keystones #1 16 February 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 February 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 2⁄3

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 3x - 7 = 29

    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

    Divide 180 in the ratio 1:1:4

    Answer: 30, 30 and 120
  5. 5. Statistics Mean

    Calculate the mean of: 50, 38, 6, 13, 23, 30. Give your answer to 2 decimal places

    Answer: 26.67

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