This math topic provides practice on calculating the percent change in numbers that grow by multiples of 10%. It involves determining the percentage by which a number increases to a new value, e.g., from 10 to 13 or from 90 to 99. The problems are multiple-choice and are designed for learners at level 1 of a unit on introductory percentages. Each question presents a different base number and its increased value, requiring the calculation of the percent increase between these two numbers.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Practice:
Percent change in a growing number (10% multiples)
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
What percent did the number change by?
100 grows to 130
Percent change in a growing number (10% multiples) Worksheet
| Math worksheet on 'Percent change in a growing number (10% multiples) (Level 1)'. Part of a broader unit on 'Percentages - Intro' Learn online: app.mobius.academy/math/units/percentages_intro/ |
1
| What percent did the number change by? |
| 50 grows to 60 |
a
| 30% |
b
| 10% |
c
| 20% |
d
| 60% |
e
| 40% |
f
| 35% |
2
| What percent did the number change by? |
| 90 grows to 99 |
a
| 0% |
b
| 10% |
c
| -10% |
d
| -20% |
e
| 20% |
f
| 1% |
3
| What percent did the number change by? |
| 60 grows to 72 |
a
| 40% |
b
| -10% |
c
| 15% |
d
| 30% |
e
| 60% |
f
| 20% |
4
| What percent did the number change by? |
| 20 grows to 26 |
a
| 50% |
b
| 18% |
c
| 0% |
d
| 54% |
e
| 40% |
f
| 30% |
5
| What percent did the number change by? |
| 80 grows to 88 |
a
| 17% |
b
| 10% |
c
| 50% |
d
| 0% |
e
| 40% |
f
| 4% |
6
| What percent did the number change by? |
| 90 grows to 117 |
a
| 40% |
b
| 63% |
c
| 60% |
d
| 30% |
e
| -0% |
f
| 10% |
7
| What percent did the number change by? |
| 50 grows to 65 |
a
| -0% |
b
| 30% |
c
| 60% |
d
| 10% |
e
| 21% |
f
| 70% |