 Go to website

# Consumer arithmetic (Year 9)

This module from the AMSI 'The Improving Mathematics Education in Schools (TIMES) project' is for teachers who wish to consolidate their content knowledge on the topic of using percentages to calculate profit and loss and other financial calculations. There are sections that provide history and context for the topic, as well as exercises and examples of how to present and explain the concepts to students.

Year level(s) Year 8, Year 10
Purpose Content knowledge
Keywords interest, profit, loss, percentage, GST, tax, explicit teaching

## Curriculum alignment

Strand and focus Number
Topics Money and financial mathematics
AC: Mathematics (V9.0) content descriptions
AC9M8N05

Use mathematical modelling to solve practical problems involving rational numbers and percentages, including financial contexts; formulate problems, choosing efficient calculation strategies and using digital tools where appropriate; interpret and communicate solutions in terms of the situation, reviewing the appropriateness of the model

AC9M10A04
Use mathematical modelling to solve applied problems involving growth and decay, including financial contexts; formulate problems, choosing to apply linear, quadratic or exponential models; interpret solutions in terms of the situation; evaluate and modify models as necessary and report assumptions, methods and findings

Numeracy progression Proportional thinking (P6)
Understanding money (P8)
Number patterns and algebraic thinking (P9)