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Cornerstone · Grades 3–5 Keystones #1 10 January 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 10 January 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

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

    Solve: 5x + 4 = 24

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.26cm
  4. 4. Ratio Sharing in a ratio

    Divide 95 in the ratio 2:2:1

    Answer: 38, 38 and 19
  5. 5. Statistics Mean

    Calculate the mean of: 20, 37, 28, 31, 12, 47. Give your answer to 2 decimal places

    Answer: 29.17

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