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

Five GCSE retrieval questions · 3 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 1⁄10

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

    Solve: 3x - 20 = 4

    Answer: x = 8
  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

    Share 33 in the ratio 1:2

    Answer: 11 and 22
  5. 5. Statistics Mean

    Find the mean of: 3, 7, 11, 4, 15

    Answer: 8

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