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Cornerstone · Grades 3–5 Keystones #1 15 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 2⁄7

    Answer: 31⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 22

    Answer: x = 9
  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

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 49, 33, 39, 6, 45, 18, 11, 17

    Answer: 27.25

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