1) The document discusses reducing ratios to their lowest terms. It provides examples of reducing fractions such as 2/4 to 1/2 and ratios such as 15:30 to 5:10.
2) Students are asked to reduce given ratios and fractions to their simplest form. This involves dividing the ratios by their greatest common factor until they can no longer be simplified.
3) Reducing ratios to lowest terms ensures they are expressed in the simplest possible way. This makes comparisons between ratios clearer and more straightforward.