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How do you write a % as a decimal
divide by 100
make this percent into a decimal: 75.3%
0.753
make this percent into a decimal: 3%
0.03
How do you write a decimal as a percent?
multiply by 100
make this decimal into a percent: 0.06
6%
make this decimal into a percent: 3.54
354%
What is 30% of 50?
15
50% of 100 is what number?
50
75% of what number is 30?
40
find the percent of change: 100 people to 75 people
40% decrease
find the percent of change: 5 books to 17 books
240% increase
find the new amount: 10 cars increased by 20%
12 cars
find the new amount: 11 pens decreased by 50%
5.5 pens
find the sale price- Original Price: $15; discounted by 30%
$10.50
find the sale price- Original Price: $5.50; mark up: 80%
$9.90
find the mark up- Original Price: $3; Sale Price: $10
233.3% mark up
