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Cornerstone · Grades 3–5 Keystones #1 7 November 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 7 November 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 7⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x - 6 = 24

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 9cm

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 3:1

    Answer: 54 and 18
  5. 5. Statistics Mean

    Find the mean of: 2, 6, 6

    Answer: 4.6666666666667

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