1) The document discusses different ways to convert between fractions, decimals, and percentages including using place value, cancelling fractions, finding equivalent fractions, and dividing the numerator by the denominator. 2) Methods are presented for calculating percentages of amounts using mental math for simple percentages, changing the percentage to an equivalent fraction, and changing it to a decimal. The concepts of percentage increase and decrease are also explained. 3) Proportions are defined as comparing the size of a part to the whole, and examples are given of expressing proportions as fractions, decimals, and percentages. 4) Direct and inverse proportion are introduced, with direct proportion meaning quantities increase in the same ratio and inverse proportion meaning they decrease in the