Calculating a given percentage of a quantity by converting the percent to a decimal (or fraction) and multiplying.
25% of 80 means 'one quarter of 80.' Convert 25% to 0.25 and multiply: 0.25×80=20.
Showing a random 20 of 50 problems.
Example 1
easy
Find 5% of 80.5% of 80 — 1 out of 20 sections is shaded; find its value
Example 2
medium
A laptop costs $1{,}200. A tax of 7% is added. What is the tax amount?
Example 3
easy
Find 100% of 37.
Example 4
medium
Find 15% of 60.15% of 60 — 3 out of 20 sections are shaded; find their value
Example 5
challenge
A number increased by 20% becomes 96. What was the original number?
Example 6
easy
Find 1% of 600.
Example 7
medium
A store offers a 40% discount on a jacket priced at $85. What is the sale price?
Example 8
hard
A car loses 15% of its value each year. A $20{,}000 car is worth how much after one year?
Example 9
challenge
Which is larger: 30% of 80, or 80% of 30?
Example 10
medium
60% of $45 is what amount?
Example 11
easy
Find 20% of 90.20% of 90 — one fifth of the bar is shaded; find its value
Example 12
medium
In a school of 640 students, 55% ride the bus. How many ride the bus?55% of 640 students ride the bus — 11 out of 20 sections are shaded; find the count
Example 13
medium
A restaurant bill is $72. You leave an 18% tip. How much is the tip?
Example 14
easy
Find 200% of 35.
Example 15
medium
Find 40% of 250.40% of 250 — 2 out of 5 sections are shaded; find their value
Example 16
easy
Find 50% of 40.50% of 40 — half the bar is shaded; find the value of that half
Example 17
hard
After adding 20% to a number, you get 84. What was the original?