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Cornerstone · Grades 3–5 Keystones #1 23 February 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 February 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

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

    Solve: 3x - 15 = 18

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

    Calculate the hypotenuse when a = 4cm and b = 13cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 2:3:4

    Answer: 20, 30 and 40
  5. 5. Statistics Mean

    Find the mean of: 6, 18, 5, 2, 12

    Answer: 8.6

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