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Cornerstone · Grades 3–5 Keystones #1 24 February 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 24 February 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄8

    Answer: 19⁄24
  2. 2. Algebra Two-step equations

    Solve: 8x - 11 = 69

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 7, 30, 21, 8, 26, 35. Give your answer to 2 decimal places

    Answer: 21.17

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