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Cornerstone · Grades 3–5 Keystones #1 3 January 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 4⁄7

    Answer: 23⁄28
  2. 2. Algebra Two-step equations

    Solve: 7x - 7 = 28

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 9cm

    Answer: 9.85cm
  4. 4. Ratio Sharing in a ratio

    Share 63 in the ratio 3:4

    Answer: 27 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 30, 45, 44, 44, 20, 43

    Answer: 37.7

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