exam Maths Puzzle Numerical Ability

15 km² - 52 ha =
47 m² - 3207 cm² =
1086 cm² / 19 mm² =

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exam Other Question

a 7.61cm X 7.68cm rectangular piece of glass has a thickness of 2.2mm and a mass of 35.303g. What is the density of the glass? Factoring Trinomials by Trial and Error
18x^3y+36x^2y-32xy