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Cornerstone · Grades 3–5 Keystones #1 16 September 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 September 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 5 = 40

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

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Share 133 in the ratio 3:4

    Answer: 57 and 76
  5. 5. Statistics Mean

    Find the mean of: 18, 12, 12

    Answer: 14

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