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Cornerstone · Grades 3–5 Keystones #1 10 November 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 November 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 5⁄6

    Answer: 19⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 53

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 3:3:4

    Answer: 81, 81 and 108
  5. 5. Statistics Mean

    Calculate the mean of: 12, 8, 28, 42, 30, 40, 49, 32

    Answer: 30.1

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