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Cornerstone · Grades 3–5 Keystones #1 30 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 7x - 6 = 29

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

    Calculate the hypotenuse when a = 5cm and b = 14cm

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 1:4:4

    Answer: 12, 48 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 45, 26, 7, 6, 5, 40

    Answer: 21.5

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