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Cornerstone · Grades 3–5 Keystones #1 8 October 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x + 8 = 40

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

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

    Share 112 in the ratio 4:3

    Answer: 64 and 48
  5. 5. Statistics Mean

    Find the mean of: 4, 7, 12, 16, 14

    Answer: 10.6

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