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Cornerstone · Grades 3–5 Keystones #1 3 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 31

    Answer: x = 6
  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 30 in the ratio 1:4

    Answer: 6 and 24
  5. 5. Statistics Mean

    Find the mean of: 4, 5, 3, 6

    Answer: 4.5

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