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Cornerstone · Grades 3–5 Keystones #1 22 January 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 January 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 3⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 73

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 1:3

    Answer: 6 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 47, 22, 6, 28, 42, 10, 25. Give your answer to 2 decimal places

    Answer: 25.71

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