Percent growth of money (10% multiples) (Level 3)

This math topic focuses on calculating percent growth of money, specifically using 10% increments. The problems involve determining the final monetary amount after applying a 20% increase, either as interest, a tip, or a general percentage increase to initial amounts ranging from $5 to $95. Each problem lists multiple-choice answers, requiring an understanding of applying percentage calculations in various financial contexts to solve them.

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

Percent growth of money (10% multiples) Worksheet

Math worksheet on 'Percent growth of money (10% multiples) (Level 3)'. Part of a broader unit on 'Percentages - Intro' Learn online: app.mobius.academy/math/units/percentages_intro/

1

Calculate the final amount when it changes by a percentage

$65 plus 20% interest

a

$101.40

b

$109.20

c

$78.00

d

$62.40

e

$81.90

f

$113.10

2

Calculate the final amount when it changes by a percentage

$55 grows by 20%

a

$85.80

b

$62.70

c

$49.50

d

$82.50

e

$89.10

f

$66.00

3

Calculate the final amount when it changes by a percentage

Add 20% tip to $15

a

$10.80

b

$14.40

c

$26.10

d

$15.30

e

$23.40

f

$18.00

4

Calculate the final amount when it changes by a percentage

20% more than $35

a

$42.00

b

$46.20

c

$35.70

d

$48.30

e

$56.70

f

$21.00

5

Calculate the final amount when it changes by a percentage

20% more than $5

a

$8.40

b

$6.00

c

$6.60

d

$7.20

e

$3.90

f

$8.10

6

Calculate the final amount when it changes by a percentage

Add 20% tip to $75

a

$49.50

b

$90.00

c

$94.50

d

$112.50

e

$76.50

f

$45.00

7

Calculate the final amount when it changes by a percentage

$25 plus 20% interest

a

$30.00

b

$36.00

c

$37.50

d

$27.00

e

$16.50

f

$21.00