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Cornerstone · Grades 3–5 Keystones #1 11 August 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 August 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 1⁄5

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

    Solve: 2x - 17 = -1

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 1:3

    Answer: 20 and 60
  5. 5. Statistics Mean

    Find the mean of: 2, 6, 14, 19

    Answer: 10.25

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