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Percent change in a shrinking number (10% multiples) - Concept Intro

Level 1

This math topic focuses on calculating the percent change in shrinking numbers, specifically in multiples of 10%. It includes exercises where students find the percentage decrease when a number decreases from its original value by given percentages. Each problem presents an initial calculation of what 10% of various numbers such as 80, 20, 60, 40, 10, 100 is, followed by a question asking what the percentage change is when that number reduces to a lower value. Answer choices are provided in multiple-choice format to reinforce understanding of percentage decrease calculations.

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

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Percent change in a shrinking number (10% multiples) - Concept Intro Worksheet

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Percent change in a shrinking number (10% multiples) - Concept Intro
1
If paying $63 for a $70 item is a 10% discount, what discount percent would it be if you payed $84?
An svg image showing a math problem
a
-30%
b
-14%
c
-10%
d
-3%
e
-20%
f
-22%
2
If paying $63 for a $70 item is a 10% discount, what discount percent would it be if you payed $91?
An svg image showing a math problem
a
-24%
b
-30%
c
-50%
d
-18%
e
0%
f
-60%
3
If paying $45 for a $50 item is a 10% discount, what discount percent would it be if you payed $65?
An svg image showing a math problem
a
-60%
b
-30%
c
0%
d
-9%
e
-10%
f
10%
4
If paying $36 for a $40 item is a 10% discount, what discount percent would it be if you payed $52?
An svg image showing a math problem
a
-21%
b
-27%
c
-30%
d
10%
e
0%
f
-40%
5
If paying $54 for a $60 item is a 10% discount, what discount percent would it be if you payed $78?
An svg image showing a math problem
a
-21%
b
-50%
c
-30%
d
-39%
e
-40%
f
6%
6
If paying $81 for a $90 item is a 10% discount, what discount percent would it be if you payed $108?
An svg image showing a math problem
a
-20%
b
-10%
c
-29%
d
-7%
e
-40%
f
10%
7
If paying $27 for a $30 item is a 10% discount, what discount percent would it be if you payed $36?
An svg image showing a math problem
a
-20%
b
0%
c
-5%
d
-21%
e
-30%
f
10%
8
If paying $72 for a $80 item is a 10% discount, what discount percent would it be if you payed $96?
An svg image showing a math problem
a
0%
b
-10%
c
-40%
d
-30%
e
-20%
f
-50%