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

Five GCSE retrieval questions · 7 October 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄5

    Answer: 19⁄15
  2. 2. Algebra Two-step equations

    Solve: 4x + 9 = 29

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 35, 29, 49, 15, 7, 44

    Answer: 29.8

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