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Cornerstone · Grades 3–5 Keystones #1 30 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 1⁄7

    Answer: 13⁄42
  2. 2. Algebra Two-step equations

    Solve: 2x - 15 = 11

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 7.62cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 4:3

    Answer: 24 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 11, 15, 26, 41, 19, 25. Give your answer to 2 decimal places

    Answer: 22.83

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