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Cornerstone · Grades 3–5 Keystones #1 16 June 2021 Skills week 1 of 7
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Five GCSE retrieval questions · 16 June 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 1⁄12

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

    Solve: 7x + 5 = 54

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 3:4:2

    Answer: 36, 48 and 24
  5. 5. Statistics Mean

    Find the mean of: 18, 4, 13

    Answer: 11.666666666667

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