Casey’s Cactus Calculations
In this worksheet, students assume the role of a retailer who needs to calculate what the GST-inclusive price for their items will need to be.
This worksheet is part of a larger unit designed to help students understand, recognise, and calculate the GST in a number of scenarios.
Having trouble downloading?
Follow our step-by-step guide
Learning goals
- We are learning to solve practical problems involving addition and multiplication and choosing operations and efficient calculation strategies to solve the problem.
- We are learning to solve practical problems involving natural and rational numbers and percentages in financial contexts.
- We are learning to create simple financial plans, e.g. a simple budget or identifying the GST on invoices and receipts.
Curriculum alignment
AC9M6N09
9
Use mathematical modelling to solve practical problems, involving rational numbers and percentages, including in financial contexts; formulate the problems, choosing operations and efficient calculation strategies, and using digital tools where appropriate; interpret and communicate solutions in terms of the situation, justifying the choices made
AC9M5N09
9
Use mathematical modelling to solve practical problems involving additive and multiplicative situations including financial contexts; formulate the problems, choosing operations and efficient calculation strategies, using digital tools where appropriate; interpret and communicate solutions in terms of the situation
ACMNA106
8.4
Create simple financial plans
MA3-1WM
old
Describes and represents mathematical situations in a variety of ways using mathematical terminology and some conventions
MA3-2WM
old
Selects and applies appropriate problem- solving strategies, including the use of digital technologies, in undertaking investigations
MA3-3WM
old
Gives a valid reason for supporting one possible solution over another
MA3-5NA
old
Selects and applies appropriate strategies for addition and subtraction with counting numbers of any size
MA3-6NA
old
Selects and applies appropriate strategies for multiplication and division, and applies the order of operations to calculations involving more than one operation
MA3-MR-02
new
Constructs and completes number sentences involving multiplicative relations, applying the order of operations to calculations
MA3-MR-01
new
Selects and applies appropriate strategies to solve multiplication and division problems
MA3-RN-01
new
Applies an understanding of place value and the role of zero to represent the properties of numbers
MA3-RN-02
new
Compares and orders decimals up to 3 decimal places
MA3-RN-03
new
Determines percentages of quantities, and finds equivalent fractions and decimals for benchmark percentage values
MA3-AR-01
new
Selects and applies appropriate strategies to solve addition and subtraction problems
VCMNA209
Select and apply efficient mental and written strategies and appropriate digital technologies to solve problems involving all four operations with whole numbers and make estimates for these computations
VCMNA191
Create simple financial plans
VCMNA185
Use efficient mental and written strategies and apply appropriate digital technologies to solve problems
Australian Curriculum covers QLD / SA / WA / NT / TAS / ACT.
Teach it your way
Finding related resources…
Finding related resources…