Learn how to calculation percentages in this easy lesson! when you\"re asked to calculation an (unknown) percent (\"What percentage...?\"), you require to an initial write the fraction PART/TOTAL, and also then just write that fraction as a decimal and as a percentage. See plenty of examples below.

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The concepts and ideas the this lesson are likewise explained in this video:

What percentageof the elevation of a 15-ft tree isa 3-ft sapling?A choir has actually 22 women and also 18 men. Uncover what percentageof the choir’s members aremen.One pair the jeans costs $25 and another costs $28. How countless percent is the price the cheaper blue jeans of the price the the more expensive jeans?

Look closely at the inquiries above. Notice that the difficulties don’t tell friend the percentage; in various other words,there is no number in the difficulty written together x%. Instead, they ask you to discover it!

Questions v “What percent ... ?” or \"How countless percent ... ?\"

Asking “What percentage?” or \"How numerous percent?\" is the same as questioning “How many hundredth parts?”

We deserve to solve these inquiries in a two-part process:

First discover out the component that is being asked for as a fraction.The denominator more than likely won’t be 100.Convert that fraction to a decimal. Then you can easily transform the decimal come a percentage!

Example 1. A choir has 22 women and also 18 men. Discover what portion of the choir’s members space men.

Find the end what component (fraction) the the choir’s members are men. The is 18/40, or 9/20.Write 9/20 as a percent. Use tantamount fractions: 9/20 = 45/100 = 45%.

Example 2. One pair that jeans prices $25 and the other costs $28.How numerous percent is the price of cheaper jeans of the price the the an ext expensive jeans?

Write what part the cheaper price is that the much more expensive price. The price is 25/28.Write 25/28 as a percentage. A calculator offers 25/28 = 0.8928... Rounded come the nearest totality percent, that’s 89%.

1. a. What percent of a 15-ft tree is a small 3-ft sapling?

b. How countless percent is $12 the $16?

2. Uncover how numerous percent the smaller object’s elevation is the the taller object’s height.


6 m

8 m
300 cm
120 cm
b.3. A 2-year old child procedures 32 customs tall and also weighs 24 pounds. A 10-year old child procedures 52 inch tall and also weighs 96 pounds.

a. How many percent is the smaller child’s period of the enlarge child’s age?


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How numerous percent is the smaller child’s elevation of the older child’s height?

4. Write the percentages into the sectors in the one graphs Think the fractions!


5. The one graph at the right gives the angle measure of each sector of the circle. Discover what percent each ar is the the entirety circle, and write the percentage in the sector. Remember, the totality circle is 360°.

See also

Percent – complimentary lesson

Percentage of a number using mental math – cost-free lesson

How to calculate percentages of numbers – complimentary lesson

Basics the percent of readjust – free lesson

Interactive fraction, decimal and percentage toolThis tool reflects you a portion visually (bar or pie) and also converts the portion into a percentage and also decimal. Friend can present or hide the identical percentage and decimal./interactives/fraction_decimal_percentage.php

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