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Cornerstone · Grades 3–5 Keystones #1 4 December 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄5

    Answer: 19⁄20
  2. 2. Algebra Two-step equations

    Solve: 2x - 9 = 15

    Answer: x = 12
  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

    Share 25 in the ratio 3:2

    Answer: 15 and 10
  5. 5. Statistics Mean

    Find the mean of: 20, 19, 4, 3

    Answer: 11.5

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