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

Five GCSE retrieval questions · 1 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄3

    Answer: 16⁄15
  2. 2. Algebra Two-step equations

    Solve: 7x + 12 = 40

    Answer: x = 4
  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

    Divide 108 in the ratio 4:2:3

    Answer: 48, 24 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 18, 41, 13, 20, 40, 21

    Answer: 25.5

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