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

Five GCSE retrieval questions · 3 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄12 + 3⁄12

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

    Solve: 7x - 17 = 18

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 12cm

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 105 in the ratio 3:1:3

    Answer: 45, 15 and 45
  5. 5. Statistics Mean

    Find the mean of: 14, 3, 3, 10, 2

    Answer: 6.4

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