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

Five GCSE retrieval questions · 5 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x + 15 = 30

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 8.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 152 in the ratio 4:3:1

    Answer: 76, 57 and 19
  5. 5. Statistics Mean

    Calculate the mean of: 9, 11, 9, 29, 33, 14, 38. Give your answer to 2 decimal places

    Answer: 20.43

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