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Cornerstone · Grades 3–5 Keystones #1 5 November 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 6⁄8

    Answer: 5⁄4
  2. 2. Algebra Two-step equations

    Solve: 4x + 11 = 47

    Answer: x = 9
  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

    Share 100 in the ratio 4:1

    Answer: 80 and 20
  5. 5. Statistics Mean

    Find the mean of: 19, 19, 4

    Answer: 14

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