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Cornerstone · Grades 3–5 Keystones #1 22 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 1⁄4

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 2x + 13 = 25

    Answer: x = 6
  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

    Share 70 in the ratio 3:2

    Answer: 42 and 28
  5. 5. Statistics Mean

    Find the mean of: 18, 10, 7, 20, 9

    Answer: 12.8

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