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Cornerstone · Grades 3–5 Keystones #1 12 September 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 September 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 2⁄4

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

    Solve: 2x + 4 = 14

    Answer: x = 5
  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 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 23, 25, 49, 49, 13, 35, 38, 10

    Answer: 30.3

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