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Cornerstone · Grades 3–5 Keystones #1 10 February 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 10 February 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 2⁄3

    Answer: 22⁄15
  2. 2. Algebra Two-step equations

    Solve: 4x + 11 = 55

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

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Share 78 in the ratio 2:1

    Answer: 52 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 10, 17, 8, 33, 42, 6, 41. Give your answer to 2 decimal places

    Answer: 22.43

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