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Cornerstone · Grades 3–5 Keystones #1 30 March 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 4⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 4x - 20 = 8

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

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 3:2:3

    Answer: 63, 42 and 63
  5. 5. Statistics Mean

    Find the mean of: 15, 20, 7

    Answer: 14

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