I = PRT/100: Space & Astronomy Real-world Applications
Mathematics
Grade 8
12 questions
~24 mins
1 views0 downloads
About This Worksheet
This worksheet explores simple interest calculations using the formula I = PRT/100 within space and astronomy contexts, designed for Grade 8 students.
Worksheet Preview
Full preview • 12 questions
I = PRT/100: Space & Astronomy Real-world Applications
Subject: MathematicsGrade: Grade 8
Name:
Date:
TeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizz
Untitled Worksheet
Grade Grade 8
A
Practice Questions
Answer all questions. Show your working in the grid spaces provided.
1.
Calculate the interest earned if a spacecraft investment of $10,000 accrues an interest rate of 5% over 2 years.
[2 marks]2.
A satellite company invests $50,000 at an annual interest rate of 3%. How much interest will they earn after 4 years?
[2 marks]3.
Find the principal amount if the interest earned over 3 years at 4% per year is $120.
[2 marks]4.
Construct a triangle with sides proportional to the interest amounts for three different space missions earning interest at 2%, 4%, and 6% over the same period. Use the grid to draw.
[3 marks]5.
A lunar research fund of $20,000 earns interest at 7% annually. How long will it take to earn $2800 in interest?
[3 marks]6.
A spaceship development project receives a loan of $15,000 with a 5% interest rate. Calculate the interest after 1 year.
[2 marks]7.
In a space mission, if the principal is $8,000 and the interest after 5 years is $2000, what is the annual interest rate?
[3 marks]8.
A telescope project receives funding that accrues interest over 3 years. If the principal is $25,000 and the interest earned is $3750, find the interest rate.
[3 marks]9.
An astronaut training program is funded with $12,000 and earns interest at 4%. How much interest is earned in 6 months?
[2 marks]10.
If a space agency invests $30,000 at 6% interest per year, how much interest will it generate in 3 years?
[2 marks]11.
An error in interest calculation shows $150 instead of the correct $300 interest earned on a $10,000 principal at 3% over 2 years. Identify and correct the mistake using the formula I = PRT/100.
[4 marks]12.
A scientist deposits $40,000 with an interest rate of 4.5%. After 5 years, she notices the interest earned is less than expected. Calculate the correct interest and suggest what might be wrong if the interest recorded was only $4,500.
[4 marks]Unlock Answer Keys & Remix
Worksheets are FREE to download with a free account! Upgrade to PRO for these premium features:
Answer keys for all 1,899+ worksheets
Remix tool — customize any worksheet with AI
AI Generator — create unlimited custom worksheets
Cancel anytime • No commitment • Start today
Quick Actions
What is Remix?
Create a new worksheet based on this one. Change the grade level, topic, number of questions, or difficulty - then generate a fresh version.
- • Change grade level (Grade 6 → Grade 7)
- • Swap topics (Harry Potter → Macbeth)
- • Add more questions (10 → 15)
- • Adjust difficulty
Details
- Created
- 1/1/2026
- Updated
- 1/1/2026
- Type
- worksheet