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Cornerstone · Grades 3–5 Keystones #1 8 May 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 May 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 2⁄5

    Answer: 17⁄30
  2. 2. Algebra Two-step equations

    Solve: 7x + 8 = 36

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 1:4

    Answer: 17 and 68
  5. 5. Statistics Mean

    Find the mean of: 20, 10, 11, 18, 12

    Answer: 14.2

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