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Cornerstone · Grades 3–5 Keystones #1 7 August 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 7 August 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

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

    Solve: 6x - 12 = 66

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 1:4

    Answer: 7 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 6, 41, 44, 21, 26, 44, 44

    Answer: 32.3

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