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Cornerstone · Grades 3–5 Keystones #1 24 December 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 24 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 3x - 7 = 20

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 44 in the ratio 3:1

    Answer: 33 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 10, 19, 18, 8, 22, 8, 15

    Answer: 14.3

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