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Cornerstone · Grades 3–5 Keystones #1 4 August 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x + 15 = 27

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 4:3:1

    Answer: 80, 60 and 20
  5. 5. Statistics Mean

    Find the mean of: 4, 9, 4, 7

    Answer: 6

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