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Cornerstone · Grades 3–5 Keystones #1 16 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 7⁄8

    Answer: 11⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x - 12 = 38

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 13cm

    Answer: 17.69cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 2:3

    Answer: 12 and 18
  5. 5. Statistics Mean

    Find the mean of: 5, 11, 2

    Answer: 6

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