Home
Grade 1Grade 2Grade 3Grade 4Grade 5Grade 6Grade 7Grade 8Grade 9Grade 10Math Themes
Explorers (Grades 1-3)Explorers Elite (1-3)Navigators (Grades 4-6)Navigators Elite (4-6)Challengers (Grades 7-9)Challengers Elite (7-9)Schedule an Evaluation
Mobius MethodFlexible ClassesCompanySupport
Pricing
Ctrl+k
Sign InJoin

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

Level 3

This math topic focuses on calculating simple interest given the principal, the annual interest rate, and the time period in years. The problems are designed to teach students how to apply the simple interest formula to find the amount of interest accrued over a defined period, using various scenarios with different principal amounts, interest rates, and time durations. Each problem offers multiple-choice answers, allowing learners to select the correct amount of interest calculated from the provided data. This 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.

more
View Unit

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

Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.

What is the simple interest in this situation?

Principle =$800Rate =35%Time =9yrsInterest =$?\begin{align*}\text{Principle } &= \$800\\ \text{Rate } &= 35\%\\ \text{Time } &= 9\text{yrs}\\ \\ \text{Interest } &= \$?\end{align*}

?

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

Mobius Math Club logo
Math worksheet on 'Interest (Simple) - Interest from Principle, Rate, and Time (Level 3)'. Part of a broader unit on 'Percents and Simple Interest - Practice' Learn online: app.mobius.academy/math/units/percents_and_simple_interest_practice/
1
What is the simple interest in this situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$800\\ \text{Rate } &= 35\%\\ \text{Time } &= 9\text{yrs}\\ \\ \text{Interest } &= \$?\end{align*}
a
1,008
b
3,528
c
4,284
d
756
e
2,520
f
1,512
2
What is the simple interest in this situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$900\\ \text{Rate } &= 25\%\\ \text{Time } &= 7\text{yrs}\\ \\ \text{Interest } &= \$?\end{align*}
a
476
b
2,203
c
2,674
d
790
e
1,575
f
2,517
3
What is the simple interest in this situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$100\\ \text{Rate } &= 15\%\\ \text{Time } &= 1\text{yrs}\\ \\ \text{Interest } &= \$?\end{align*}
a
7
b
14
c
15
d
18
e
12
f
6
4
What is the simple interest in this situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$400\\ \text{Rate } &= 10\%\\ \text{Time } &= 5\text{yrs}\\ \\ \text{Interest } &= \$?\end{align*}
a
200
b
180
c
80
d
380
e
320
f
100
5
What is the simple interest in this situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$700\\ \text{Rate } &= 5\%\\ \text{Time } &= 4\text{yrs}\\ \\ \text{Interest } &= \$?\end{align*}
a
140
b
266
c
238
d
14
e
56
f
28
6
What is the simple interest in this situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$200\\ \text{Rate } &= 20\%\\ \text{Time } &= 1\text{yrs}\\ \\ \text{Interest } &= \$?\end{align*}
a
56
b
40
c
16
d
24
e
36
f
64
7
What is the simple interest in this situation?
A LaTex expression showing \begin{align*}\text{Principle } &= \$100\\ \text{Rate } &= 30\%\\ \text{Time } &= 2\text{yrs}\\ \\ \text{Interest } &= \$?\end{align*}
a
36
b
24
c
78
d
66
e
114
f
60