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Cornerstone · Grades 3–5 Keystones #1 1 April 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 April 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 1⁄5

    Answer: 19⁄20
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 61

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 3:2

    Answer: 27 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 43, 14, 43, 25, 43, 8, 39. Give your answer to 2 decimal places

    Answer: 30.71