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

Level 1

This math topic focuses on calculating the rate of simple interest given the principal amount, the total interest earned over a period, and the time. Through a series of problems, learners apply the simple interest formula to find the rate, enhancing their understanding of percentages and basic algebra. Each question presents different scenarios with varying principal amounts, interest, and time durations, and multiple choice answers for determining the rate percentage. This topic is part of a broader unit on percents and simple interest.

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

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

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Math worksheet on 'Interest (Simple) - Rate From Interest, Principle, and Time (Level 1)'. Part of a broader unit on 'Percents and Simple Interest - Intro' Learn online: app.mobius.academy/math/units/percents_and_simple_interest_intro/
1
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$300\\ \text{Interest } &= \$120\\ \text{Time } &= 4\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
10
b
19
c
17
d
4
e
9
f
7
2
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$900\\ \text{Interest } &= \$720\\ \text{Time } &= 8\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
17
b
14
c
10
d
3
e
11
f
15
3
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$600\\ \text{Interest } &= \$360\\ \text{Time } &= 6\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
10
b
18
c
3
d
9
e
14
f
13
4
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$200\\ \text{Interest } &= \$20\\ \text{Time } &= 1\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
1
b
12
c
10
d
4
e
5
f
16
5
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$700\\ \text{Interest } &= \$350\\ \text{Time } &= 5\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
4
b
14
c
18
d
7
e
3
f
10
6
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$400\\ \text{Interest } &= \$40\\ \text{Time } &= 1\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
10
b
6
c
1
d
11
e
17
f
14
7
What is the rate in this simple interest situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$900\\ \text{Interest } &= \$630\\ \text{Time } &= 7\text{yrs}\\ \\ \text{Rate } &= ?\%\end{align*}
a
13
b
10
c
9
d
3
e
4
f
6