MathsFreePrintable

Percentages and GST Calculations

A free maths worksheet ready for your classroom. Open in Kuraplan to grab the print-ready PDF, customize it for your students, or generate a fresh version in seconds.

Percentages and GST Calculations

Calculator and money illustration

📊 Part 1: Converting Between Percentages, Decimals and Fractions

1. Convert 0.125 to a percentage and fraction:

Percentage: _________ Fraction: _________

2. Convert 45% to a decimal and fraction:

Decimal: _________ Fraction: _________

3. What is 25% of 160?

35

40

45

50

4. Calculate 15% of $200:

💰 Part 2: GST Calculations

5. A laptop costs $900 before GST. Calculate the GST amount and total price including GST:

GST amount (10%): $ _________

Total price including GST: $ _________

6. A mobile phone is advertised for $550 including GST. What was the original price before GST?
7. Which of these statements about GST are correct? (Check all that apply)

GST in Australia is 10%

To find price including GST, multiply by 1.10

To find price before GST, divide by 1.10

GST only applies to luxury items

🛒 Part 3: Real-World Shopping Scenarios

8. You're comparing two similar tablets:

Tablet A: $440 (GST included)

Tablet B: $420 (GST not included)

Which tablet is cheaper after including GST for both? Show your working:

9. A restaurant bill shows $180 excluding GST. Calculate:

a) GST amount: $ _________

b) Total bill including GST: $ _________

c) If you want to leave a 15% tip on the total bill (including GST), how much tip would you leave? $ _________

10. Explain in your own words why it's important to know whether a price includes GST or not when shopping:

About This Worksheet

Free in Kuraplan

Sign up free, grab the PDF, and customize it for your class.

Print-Ready

Formatted for standard paper. Clean layout, easy to read.

AI-Generated

Created with Kuraplan's AI, designed for real classroom use.

For Teachers & Parents

Use in classrooms, for homework, tutoring, or homeschool.

Need a custom version of this worksheet?

Kuraplan's AI generates custom worksheets in seconds — differentiated for every learner, aligned to your curriculum.

Generate Custom Worksheets — Free
No credit card Curriculum-aligned Under 60 seconds