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Cornerstone · Grades 3–5 Keystones #1 12 May 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 12 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 3⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 25

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

    Calculate the hypotenuse when a = 6cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.16cm
  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: 15, 27, 27, 47, 32, 19. Give your answer to 2 decimal places

    Answer: 27.83

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