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Cornerstone · Grades 3–5 Keystones #1 13 August 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 4⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 3x + 6 = 21

    Answer: x = 5
  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 84 in the ratio 4:3

    Answer: 48 and 36
  5. 5. Statistics Mean

    Find the mean of: 17, 16, 20, 2

    Answer: 13.75

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