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Cornerstone · Grades 3–5 Keystones #1 12 January 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 2⁄4

    Answer: 17⁄14
  2. 2. Algebra Two-step equations

    Solve: 6x - 20 = 40

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 10cm

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Divide 76 in the ratio 1:2:1

    Answer: 19, 38 and 19
  5. 5. Statistics Mean

    Find the mean of: 9, 14, 7

    Answer: 10

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