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Cornerstone · Grades 3–5 Keystones #1 26 December 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 26 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄4

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x + 6 = 22

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 2:3

    Answer: 12 and 18
  5. 5. Statistics Mean

    Find the mean of: 13, 4, 14, 14

    Answer: 11.25

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