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Cornerstone · Grades 3–5 Keystones #1 1 May 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 May 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄5

    Answer: 11⁄15
  2. 2. Algebra Two-step equations

    Solve: 4x - 15 = 21

    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

    Divide 77 in the ratio 1:3:3

    Answer: 11, 33 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 8, 49, 29, 30, 14, 11

    Answer: 23.5

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