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Cornerstone · Grades 3–5 Keystones #1 11 January 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 January 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x - 12 = 72

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 14cm

    Answer: 15.23cm
  4. 4. Ratio Sharing in a ratio

    Share 32 in the ratio 1:3

    Answer: 8 and 24
  5. 5. Statistics Mean

    Find the mean of: 13, 3, 12, 20

    Answer: 12

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