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Cornerstone · Grades 3–5 Keystones #1 23 August 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄7

    Answer: 20⁄21
  2. 2. Algebra Two-step equations

    Solve: 3x - 10 = 26

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 174 in the ratio 3:1:2

    Answer: 87, 29 and 58
  5. 5. Statistics Mean

    Calculate the mean of: 15, 11, 6, 37, 44, 14, 47

    Answer: 24.9

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