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Cornerstone · Grades 3–5 Keystones #1 17 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 3⁄6

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 6x + 12 = 84

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 98 in the ratio 4:3

    Answer: 56 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 11, 6, 7, 34, 25, 41, 16

    Answer: 20

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