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Cornerstone · Grades 3–5 Keystones #1 18 April 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 April 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 3⁄5

    Answer: 49⁄40
  2. 2. Algebra Two-step equations

    Solve: 4x + 4 = 48

    Answer: x = 11
  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 225 in the ratio 2:3:4

    Answer: 50, 75 and 100
  5. 5. Statistics Mean

    Find the mean of: 4, 1, 11, 9, 10

    Answer: 7

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