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Cornerstone · Grades 3–5 Keystones #1 11 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 3⁄5

    Answer: 27⁄20
  2. 2. Algebra Two-step equations

    Solve: 6x - 14 = 22

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 1:4

    Answer: 18 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 41, 43, 38, 44, 29, 36

    Answer: 38.5

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