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Cornerstone · Grades 3–5 Keystones #1 8 January 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄5

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 2x - 12 = 2

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 2:2:1

    Answer: 48, 48 and 24
  5. 5. Statistics Mean

    Find the mean of: 17, 13, 6, 11, 13

    Answer: 12

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