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Cornerstone · Grades 3–5 Keystones #1 25 August 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 25 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 3⁄10

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 4x + 5 = 53

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 19.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 4:4:3

    Answer: 64, 64 and 48
  5. 5. Statistics Mean

    Find the mean of: 10, 15, 10, 25

    Answer: 15

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