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Interest (Simple) - Principle from Interest, Rate, and Time (Level 1)

This math topic focuses on calculating the principal amount in various simple interest scenarios. It forms part of a larger unit on percents and simple interest. Each problem presents values for the interest earned, the annual interest rate, and the duration in years, asking students to determine the original principal amount invested. Multiple choice answers are provided for each question, helping learners practice and affirm their understanding of the relationship between principal, rate, time, and interest in financial mathematics.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Interest (Simple) - Principle from Interest, Rate, and Time

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What is the principle in this simple interest situation?

\text{Interest } = $24000\\ \text{Rate } = 10\%\\ \text{Time } = 8\text{yrs}\\ \\ \text{Principle } = $?

Interest (Simple) - Principle from Interest, Rate, and Time Worksheet

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Math worksheet on 'Interest (Simple) - Principle from Interest, Rate, and Time (Level 1)'. Part of a broader unit on 'Percents and Simple Interest' Learn online: app.mobius.academy/math/units/percents_and_simple_interest_intro/
1
A LaTex expression showing \text{Interest } = $135000\\ \text{Rate } = 30\%\\ \text{Time } = 9\text{yrs}\\ \\ \text{Principle } = $?
What is the principle in this simple interest situation?
a
950
b
900
c
600
d
500
e
100
f
350
2
A LaTex expression showing \text{Interest } = $32000\\ \text{Rate } = 20\%\\ \text{Time } = 4\text{yrs}\\ \\ \text{Principle } = $?
What is the principle in this simple interest situation?
a
400
b
680
c
80
d
240
e
280
f
600
3
A LaTex expression showing \text{Interest } = $90000\\ \text{Rate } = 20\%\\ \text{Time } = 5\text{yrs}\\ \\ \text{Principle } = $?
What is the principle in this simple interest situation?
a
1,080
b
990
c
900
d
1,440
e
810
f
180
4
A LaTex expression showing \text{Interest } = $30000\\ \text{Rate } = 20\%\\ \text{Time } = 3\text{yrs}\\ \\ \text{Principle } = $?
What is the principle in this simple interest situation?
a
100
b
500
c
450
d
900
e
350
f
50
5
A LaTex expression showing \text{Interest } = $72000\\ \text{Rate } = 20\%\\ \text{Time } = 9\text{yrs}\\ \\ \text{Principle } = $?
What is the principle in this simple interest situation?
a
280
b
760
c
680
d
320
e
400
f
160
6
A LaTex expression showing \text{Interest } = $36000\\ \text{Rate } = 20\%\\ \text{Time } = 2\text{yrs}\\ \\ \text{Principle } = $?
What is the principle in this simple interest situation?
a
1,080
b
270
c
450
d
720
e
900
f
1,260
7
A LaTex expression showing \text{Interest } = $42000\\ \text{Rate } = 30\%\\ \text{Time } = 2\text{yrs}\\ \\ \text{Principle } = $?
What is the principle in this simple interest situation?
a
1,120
b
630
c
420
d
700
e
1,260
f
490