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Cornerstone · Grades 3–5 Keystones #1 21 February 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 February 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 4⁄8

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

    Solve: 4x + 6 = 18

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

    Calculate the hypotenuse when a = 7cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 9.9cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 3:1

    Answer: 30 and 10
  5. 5. Statistics Mean

    Find the mean of: 11, 18, 20, 6, 20

    Answer: 15

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