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Cornerstone · Grades 3–5 Keystones #1 11 September 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 11 September 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

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

    Solve: 7x + 11 = 74

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 330 in the ratio 4:4:3

    Answer: 120, 120 and 90
  5. 5. Statistics Mean

    Calculate the mean of: 28, 27, 50, 24, 9, 46, 6. Give your answer to 2 decimal places

    Answer: 27.14

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