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Cornerstone · Grades 3–5 Keystones #1 15 July 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 4⁄7

    Answer: 26⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x - 10 = 50

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 11cm

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 3:4:4

    Answer: 48, 64 and 64
  5. 5. Statistics Mean

    Find the mean of: 15, 9, 5

    Answer: 9.6666666666667

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