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Cornerstone · Grades 3–5 Keystones #1 28 February 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 28 February 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

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

    Solve: 2x - 11 = 11

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 7.21cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 3:1

    Answer: 36 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 21, 40, 50, 32, 42, 22, 17

    Answer: 32

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