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Cornerstone · Grades 3–5 Keystones #1 18 February 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 February 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 2⁄4

    Answer: 15⁄14
  2. 2. Algebra Two-step equations

    Solve: 4x + 3 = 35

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 4:3:1

    Answer: 80, 60 and 20
  5. 5. Statistics Mean

    Find the mean of: 15, 5, 22

    Answer: 14

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