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Cornerstone · Grades 3–5 Keystones #1 13 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 3⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 7x + 9 = 44

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

    Calculate the hypotenuse when a = 8cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Divide 80 in the ratio 2:1:2

    Answer: 32, 16 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 45, 46, 35, 25, 43, 13, 19. Give your answer to 2 decimal places

    Answer: 32.29

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