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Cornerstone · Grades 3–5 Keystones #1 30 January 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 January 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄6

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

    Solve: 3x + 6 = 30

    Answer: x = 8
  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 72 in the ratio 3:1

    Answer: 54 and 18
  5. 5. Statistics Mean

    Find the mean of: 8, 6, 9, 20

    Answer: 10.75

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