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Cornerstone · Grades 3–5 Keystones #1 4 April 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 6⁄7

    Answer: 19⁄14
  2. 2. Algebra Two-step equations

    Solve: 3x - 8 = 37

    Answer: x = 15
  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 55 in the ratio 3:2

    Answer: 33 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 34, 25, 43, 35, 7, 7, 42, 13

    Answer: 25.8

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