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Cornerstone · Grades 3–5 Keystones #1 18 August 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 August 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 2⁄4

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

    Solve: 6x + 7 = 55

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics Mean

    Find the mean of: 7, 6, 12, 18, 7

    Answer: 10

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