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Cornerstone · Grades 3–5 Keystones #1 2 November 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 1⁄6

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

    Solve: 4x + 11 = 51

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 2:1

    Answer: 48 and 24
  5. 5. Statistics Mean

    Find the mean of: 16, 20, 8

    Answer: 14.666666666667

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