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

Five GCSE retrieval questions · 3 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 1⁄7

    Answer: 11⁄28
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 43

    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 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 41, 10, 26, 40, 46, 30, 18, 31

    Answer: 30.25

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