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Cornerstone · Grades 3–5 Keystones #1 8 April 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 2⁄5

    Answer: 24⁄35
  2. 2. Algebra Two-step equations

    Solve: 8x - 5 = 75

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 1:1:4

    Answer: 27, 27 and 108
  5. 5. Statistics Mean

    Calculate the mean of: 49, 36, 16, 42, 41, 24, 23, 22. Give your answer to 2 decimal places

    Answer: 31.63

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