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Cornerstone · Grades 3–5 Keystones #1 7 October 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 43

    Answer: x = 5
  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 120 in the ratio 2:1

    Answer: 80 and 40
  5. 5. Statistics Mean

    Find the mean of: 9, 11, 7, 6

    Answer: 8.25

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