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Cornerstone · Grades 3–5 Keystones #1 12 June 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 June 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 3⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 7x + 11 = 60

    Answer: x = 7
  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 24 in the ratio 3:1

    Answer: 18 and 6
  5. 5. Statistics Mean

    Calculate the mean of: 27, 18, 31, 16, 50, 33

    Answer: 29.2

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