The topics in this unit focus on being able to calculate and work with simple percentage. Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Practice:
Percent growth of money (principle and interest) (10% 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
10% interest on $80 principle
Percent growth of money (principle and interest) (10% multiples) Worksheet
| Math worksheet on 'Percent growth of money (principle and interest) (10% multiples) (Level 1)'. Part of a broader unit on 'Percents and Simple Interest - Intro' Learn online: app.mobius.academy/math/units/percents_and_simple_interest_intro/ |
1
| $70 principle grows by 20% interest |
| Calculate the final amount when it changes by a percentage |
a
| $113.40 |
b
| $71.40 |
c
| $79.80 |
d
| $84.00 |
e
| $121.80 |
f
| $96.60 |
2
| 10% interest on $30 principle |
| Calculate the final amount when it changes by a percentage |
a
| $33.00 |
b
| $21.45 |
c
| $44.55 |
d
| $46.20 |
e
| $42.90 |
f
| $19.80 |
3
| 20% interest on $50 principle |
| Calculate the final amount when it changes by a percentage |
a
| $60.00 |
b
| $45.00 |
c
| $66.00 |
d
| $48.00 |
e
| $75.00 |
f
| $57.00 |
4
| 30% interest on $10 principle |
| Calculate the final amount when it changes by a percentage |
a
| $10.40 |
b
| $13.00 |
c
| $9.10 |
d
| $11.70 |
e
| $9.75 |
f
| $16.25 |
5
| Add 30% interest to $20 principle |
| Calculate the final amount when it changes by a percentage |
a
| $18.20 |
b
| $35.10 |
c
| $26.00 |
d
| $36.40 |
e
| $32.50 |
f
| $15.60 |
6
| 10% interest on $50 principle |
| Calculate the final amount when it changes by a percentage |
a
| $74.25 |
b
| $35.75 |
c
| $27.50 |
d
| $63.25 |
e
| $77.00 |
f
| $55.00 |
7
| Add 10% interest to $10 principle |
| Calculate the final amount when it changes by a percentage |
a
| $8.25 |
b
| $7.70 |
c
| $11.55 |
d
| $6.05 |
e
| $11.00 |
f
| $9.35 |