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Cornerstone · Grades 3–5 Keystones #1 6 December 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 3⁄5

    Answer: 14⁄15
  2. 2. Algebra Two-step equations

    Solve: 4x + 8 = 52

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 1:3

    Answer: 9 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 12, 32, 15, 45, 39, 32, 18

    Answer: 27.6

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