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Cornerstone · Grades 3–5 Keystones #1 21 January 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄5

    Answer: 19⁄20
  2. 2. Algebra Two-step equations

    Solve: 3x + 14 = 32

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 261 in the ratio 2:4:3

    Answer: 58, 116 and 87
  5. 5. Statistics Mean

    Find the mean of: 18, 15, 9, 11, 7

    Answer: 12

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