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Cornerstone · Grades 3–5 Keystones #1 4 April 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 April 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄4

    Answer: 9⁄20
  2. 2. Algebra Two-step equations

    Solve: 3x - 15 = 18

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

    Calculate the hypotenuse when a = 9cm and b = 5cm

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 300 in the ratio 2:1:2

    Answer: 120, 60 and 120
  5. 5. Statistics Mean

    Calculate the mean of: 20, 48, 23, 35, 40, 26, 33, 32

    Answer: 32.1

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