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Cornerstone · Grades 3–5 Keystones #1 24 July 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 2⁄6

    Answer: 25⁄21
  2. 2. Algebra Two-step equations

    Solve: 6x - 18 = 48

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 3:1

    Answer: 60 and 20
  5. 5. Statistics Mean

    Find the mean of: 19, 15, 8, 6

    Answer: 12

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