This math topic practices calculating the percent growth of money, focusing on examples where the interest added to the principal is in multiples of 5%. It covers how to determine the total amount of money after the addition of interest, reinforcing concepts of percentages and simple interest. Each problem involves finding the total after a specific percentage of interest is added to a given principal, developing a foundational understanding of how interest affects financial growth.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
morePractice:
Percent growth of money (principle and interest) (5% multiples)
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
Calculate the final amount when it changes by a percentage
55% interest on $20 principle
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Percent growth of money (principle and interest) (5% multiples) Worksheet
| Math worksheet on 'Percent growth of money (principle and interest) (5% multiples) (Level 2)'. Part of a broader unit on 'Percents and Simple Interest - Intro' Learn online: app.mobius.academy/math/units/percents_and_simple_interest_intro/ |
1
| Add 35% interest to $20 principle |
| Calculate the final amount when it changes by a percentage |
a
| $35.10 |
b
| $27.00 |
c
| $14.85 |
d
| $21.60 |
e
| $13.50 |
f
| $31.05 |
2
| 25% interest on $40 principle |
| Calculate the final amount when it changes by a percentage |
a
| $57.50 |
b
| $47.50 |
c
| $30.00 |
d
| $50.00 |
e
| $72.50 |
f
| $70.00 |
3
| Add 25% interest to $60 principle |
| Calculate the final amount when it changes by a percentage |
a
| $48.75 |
b
| $93.75 |
c
| $56.25 |
d
| $97.50 |
e
| $75.00 |
f
| $105.00 |
4
| Add 65% interest to $100 principle |
| Calculate the final amount when it changes by a percentage |
a
| $82.50 |
b
| $90.75 |
c
| $115.50 |
d
| $165.00 |
e
| $198.00 |
f
| $189.75 |
5
| $40 principle plus 95% interest |
| Calculate the final amount when it changes by a percentage |
a
| $105.30 |
b
| $85.80 |
c
| $109.20 |
d
| $74.10 |
e
| $78.00 |
f
| $97.50 |
6
| $20 principle grows by 65% interest |
| Calculate the final amount when it changes by a percentage |
a
| $33.00 |
b
| $39.60 |
c
| $21.45 |
d
| $36.30 |
e
| $28.05 |
f
| $31.35 |
7
| $40 principle plus 55% interest |
| Calculate the final amount when it changes by a percentage |
a
| $46.50 |
b
| $62.00 |
c
| $52.70 |
d
| $34.10 |
e
| $71.30 |
f
| $40.30 |