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Cornerstone · Grades 3–5 Keystones #1 2 August 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 2⁄3

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

    Solve: 3x + 14 = 50

    Answer: x = 12
  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 156 in the ratio 3:2:1

    Answer: 78, 52 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 44, 45, 7, 17, 34, 7, 50. Give your answer to 2 decimal places

    Answer: 29.14

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