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Cornerstone · Grades 3–5 Keystones #1 30 April 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 April 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 1⁄10

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

    Solve: 7x + 9 = 58

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 1:3:2

    Answer: 14, 42 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 26, 21, 9, 48, 9, 15, 34

    Answer: 23.1

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