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Cornerstone · Grades 3–5 Keystones #1 27 October 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 October 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 2⁄4

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 6x + 5 = 77

    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 90 in the ratio 2:3

    Answer: 36 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 14, 14, 21, 29, 26, 10

    Answer: 19

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