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Cornerstone · Grades 3–5 Keystones #1 7 July 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄6

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x - 11 = 13

    Answer: x = 6
  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 33 in the ratio 1:2

    Answer: 11 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 19, 36, 7, 18, 24, 38, 49, 42. Give your answer to 2 decimal places

    Answer: 29.13

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