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

  1. 1. Number Adding fractions

    Add: 5⁄7 + 2⁄8

    Answer: 27⁄28
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 52

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

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 110 in the ratio 2:2:1

    Answer: 44, 44 and 22
  5. 5. Statistics Mean

    Find the mean of: 9, 14, 8

    Answer: 10.333333333333

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