# Shortcut to find percentage of a number within seconds

With this trick you can mentally find the percentage of any number within seconds

This is one of the coolest trick which makes maths fun.

Let us understand a simple concept on percentages here

100% of a number will be the number itself

ex:100% of 360 will be 360

50% of a number will be half of the number

ex:50% of 360 will be 360/2=180

25% of a number will be quarter of the number or half of 50% of the number

ex:25% of 360 will be 360/4 or 180/2=90

10% of a number can be found by shifting the decimal point by 1 place to the left.

ex:10% of 360 will be 36.0

5% of the number is half of 10% of a number

ex:5% of 360 will be 36/2=18

15% of the number will be the sum of 10% and 5% of a number

ex:15% of 360 will be (10% of 360)36+(5% of 360)18=54

1% of a number can be found by moving the decimal point by 2 places to the left.

ex:1% of 360 will be 3.60

Now that we know the concept let us see how we can apply this trick in the below examples

Example 1: 11% of 550

**Step 1:**Split the number into 2 numbers that we can easily find the percentage of.

We can split 11% into 10% and 1%

**Step 2:**First we find 10% of 550 by shifting the decimal point to the left by 1 place.

We get,

10% of 550=55.0

**Step 3:**Now we need to find 1% of 550 by shifting the decimal point to the left by 2 places.

We get,

1% of 550=5.50

**Step 4:**Adding both the results

we get 10%+1%=55.0+5.50=60.50

**Ans 11% of 550=60.50**

Example 2: 21% of 250

**Step 1:**21% can be split into 10%+10%+1%

**Step 2:**First we find 10% of 250 by shifting the decimal point to the left by one place

we get,

10% of 250=25.0

**Step 3:**Another 10% of 250 we get

10% of 250=25.0

**Step 4:**Now we need to find 1% of 250 by shifting the decimal point to the left by 2 places.

We get,

1% of 250=2.50

**Step 5:**Adding all the results we get,

10%+10%+1%=25+25+2.50=52.50

**Ans 21% of 250=52.50**

**
**Example 3: 61% of 754

**Step 1:**61% can be split into 50%+10%+1%

**Step 2:**First we find 50% of 754 which is half of the number

we get,

50% of 250=377

**Step 3:**First we find 10% of 754 by shifting the decimal point to the left by one place

we get,

10% of 754=75.4

**Step 4:**Now we need to find 1% of 754 by shifting the decimal point to the left by 2 places.

We get,

1% of 754=7.54

**Step 5:**Adding all the results we get,

50%+10%+1%= 377+75.4+7.54=459.94

**Ans 61% of 754=459.94**

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