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

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 8⁄10

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

    Solve: 5x + 10 = 35

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

    Calculate the hypotenuse when a = 7cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 1:4:1

    Answer: 21, 84 and 21
  5. 5. Statistics Mean

    Find the mean of: 21, 8, 17, 14, 10

    Answer: 14

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