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Cornerstone · Grades 3–5 Keystones #1 14 July 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 2⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x + 14 = 74

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 243 in the ratio 4:4:1

    Answer: 108, 108 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 19, 42, 44, 7, 49, 50, 23, 7

    Answer: 30.1

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