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Cornerstone · Grades 3–5 Keystones #1 11 April 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 3⁄10

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

    Solve: 4x - 17 = 7

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 96 in the ratio 1:2

    Answer: 32 and 64
  5. 5. Statistics Mean

    Calculate the mean of: 32, 16, 18, 16, 6, 29

    Answer: 19.5

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