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Cornerstone · Grades 3–5 Keystones #1 4 September 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 September 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 1⁄5

    Answer: 32⁄35
  2. 2. Algebra Two-step equations

    Solve: 7x + 4 = 60

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

    Calculate the hypotenuse when a = 4cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 2:3

    Answer: 36 and 54
  5. 5. Statistics Mean

    Find the mean of: 9, 16, 5

    Answer: 10

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