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Multiplicative Reasoning


– Percentages

– Growth and decay (To include loan sharks and exponential growth in diseases)

– Compound measures

– Distance, speed and time

– Direct and inverse proportion

Example Key Words

Compound Interest

The amount of interest earned each year is added onto the original capital and included in the following year’s calculation

Simple Interest

The total amount of interest is added on at the end the term


The reduction in value of an asset over time.

Growth and Decay

Using a compound interest type formula to calculate the growth of a population or depeciation of an asset

Direct Proportion

A direct relationship between the increase or decrease of two variables.

Inverse Proportion

The relationship between one variable is directly proportional to the reciprocal of another.