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Cornerstone · Grades 3–5 Keystones #1 13 June 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 June 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄4

    Answer: 9⁄20
  2. 2. Algebra Two-step equations

    Solve: 7x - 12 = 58

    Answer: x = 10
  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 105 in the ratio 1:3:3

    Answer: 15, 45 and 45
  5. 5. Statistics Mean

    Find the mean of: 13, 15, 12, 5

    Answer: 11.25

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