Percent change in a shrinking number (10%) - Concept Intro (Level 1)

This math topic focuses on calculating the percentage change when a number decreases by 10%. It is designed to help learners understand how to determine the percent decrease from an original number to a reduced number. Specifically, each problem presents an initial number and its 10% value, followed by a new smaller number, asking students to calculate the percent change resulting from the shrinkage. This topic forms part of a broader introduction to percentages, developing foundational skills in understanding and working with percent changes.

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

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

Math worksheet on 'Percent change in a shrinking number (10%) - Concept Intro (Level 1)'. Part of a broader unit on 'Percentages - Intro' Learn online: app.mobius.academy/math/units/percentages_intro/

1

10% of 10 is 1 What is the % change if 10 shrinks to 9

What percent did the number change by?

a

-2%

b

0%

c

-1%

d

-30%

e

30%

f

-10%

2

10% of 20 is 2 What is the % change if 20 shrinks to 18

What percent did the number change by?

a

-11%

b

0%

c

-10%

d

20%

e

-19%

f

10%

3

10% of 40 is 4 What is the % change if 40 shrinks to 36

What percent did the number change by?

a

-20%

b

10%

c

4%

d

-10%

e

-40%

f

30%

4

10% of 30 is 3 What is the % change if 30 shrinks to 27

What percent did the number change by?

a

9%

b

-30%

c

-20%

d

-10%

e

0%

f

10%

5

10% of 50 is 5 What is the % change if 50 shrinks to 45

What percent did the number change by?

a

-30%

b

8%

c

10%

d

0%

e

30%

f

-10%

6

10% of 60 is 6 What is the % change if 60 shrinks to 54

What percent did the number change by?

a

-10%

b

10%

c

20%

d

30%

e

0%

f

-30%