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Cornerstone · Grades 3–5 Keystones #1 26 April 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 1⁄6

    Answer: 37⁄42
  2. 2. Algebra Two-step equations

    Solve: 4x + 11 = 23

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

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 1:4:1

    Answer: 28, 112 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 32, 50, 17, 46, 12, 28. Give your answer to 2 decimal places

    Answer: 30.83

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