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Cornerstone · Grades 3–5 Keystones #1 14 August 2022 Skills week 1 of 7
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Five GCSE retrieval questions · 14 August 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 1⁄6

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

    Solve: 5x + 5 = 25

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 1:1:4

    Answer: 25, 25 and 100
  5. 5. Statistics Mean

    Find the mean of: 11, 9, 10, 8, 8

    Answer: 9.2

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