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Cornerstone · Grades 3–5 Keystones #1 19 November 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 19 November 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄6

    Answer: 11⁄15
  2. 2. Algebra Two-step equations

    Solve: 6x - 17 = 61

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 112 in the ratio 4:3

    Answer: 64 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 22, 42, 47, 10, 30, 34, 37. Give your answer to 2 decimal places

    Answer: 31.71

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