Percentage of an Amount Flashcards

GCSE Mathematics (Edexcel) 1MA1

Percentage of an amount

To find a percentage of an amount, multiply the amount by the percentage (as a decimal or fraction).

1 / 10
GenieCreated by Genie
10 Cards

Ready to master these flashcards?

Sign in to study with spaced repetition and track your progress.

Sign In to Track Progress

Terms in this set (10)

1

Percentage of an amount

To find a percentage of an amount, multiply the amount by the percentage (as a decimal or fraction).

2

Convert percentage to decimal

Divide the percentage by 100. For example, 25% becomes 0.25.

3

Convert percentage to fraction

Write the percentage over 100 and simplify if possible. For example, 25% becomes 25/100 = 1/4.

4

Find 10% of an amount

Divide the amount by 10.

5

Find 1% of an amount

Divide the amount by 100.

6

Find 25% of an amount

Divide the amount by 4 (since 25% = 1/4).

7

Find 50% of an amount

Divide the amount by 2 (since 50% = 1/2).

8

Find 75% of an amount

Find 50% and 25% of the amount, then add them together.

9

Reverse percentage

To find the original amount before a percentage increase or decrease, divide the final amount by (1 ± percentage as a decimal).

10

Percentage increase or decrease

Find the difference between the two amounts, divide by the original amount, and multiply by 100.

Genie

Want to Learn More?

Get personalised lessons, quizzes, and instant feedback from your AI tutor.

Start Learning