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Cornerstone · Grades 3–5 Keystones #1 2 July 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄3

    Answer: 16⁄15
  2. 2. Algebra Two-step equations

    Solve: 3x + 7 = 22

    Answer: x = 5
  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 60 in the ratio 3:1:2

    Answer: 30, 10 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 19, 28, 13, 26, 25, 46. Give your answer to 2 decimal places

    Answer: 26.17

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