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Cornerstone · Grades 3–5 Keystones #1 22 February 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 February 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x + 14 = 29

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

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 72 in the ratio 1:3:2

    Answer: 12, 36 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 36, 36, 40, 9, 10, 41, 13, 32. Give your answer to 2 decimal places

    Answer: 27.13

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