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Cornerstone · Grades 3–5 Keystones #1 16 December 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 2⁄3

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

    Solve: 2x - 7 = 9

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 2:1:2

    Answer: 108, 54 and 108
  5. 5. Statistics Mean

    Calculate the mean of: 29, 14, 35, 31, 46, 47, 44

    Answer: 35.1

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