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Cornerstone · Grades 3–5 Keystones #1 30 June 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 30 June 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 2⁄3

    Answer: 13⁄15
  2. 2. Algebra Two-step equations

    Solve: 6x - 6 = 78

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 5cm

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 55 in the ratio 3:1:1

    Answer: 33, 11 and 11
  5. 5. Statistics Mean

    Find the mean of: 6, 6, 4

    Answer: 5.3333333333333

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