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Cornerstone · Grades 3–5 Keystones #1 2 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 5⁄6

    Answer: 47⁄42
  2. 2. Algebra Two-step equations

    Solve: 7x + 6 = 90

    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 84 in the ratio 3:4

    Answer: 36 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 7, 49, 21, 47, 38, 8, 28, 26

    Answer: 28

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