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Cornerstone · Grades 3–5 Keystones #1 2 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 3⁄9

    Answer: 5⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x + 3 = 17

    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

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics Mean

    Find the mean of: 3, 19, 2, 4

    Answer: 7

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