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Cornerstone · Grades 3–5 Keystones #1 31 December 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x - 7 = 37

    Answer: x = 11
  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 48 in the ratio 3:1

    Answer: 36 and 12
  5. 5. Statistics Mean

    Find the mean of: 7, 12, 20, 7

    Answer: 11.5

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