In real life there are many scenarios where we calculate percentages in our minds, for example the amount of discount on goods, tips at restaurants and many more. Have you wondered, if you could calculate all these percentages mentally then you will save a lot of time. Even during exams you can save time if you know the tricks of calculating percentages mentally. These tricks are useful for students of classes 6 to 12 and for those preparing for CBSE exams or other entrance exams.

Percentage is a number or ratio that represents a fraction of 100. The word percent means per 100. It is represented by the symbol “%”.

## How to calculate the percentage of a number?

To calculate the percentage of a number,

Q% of Number = Y

where Y is the required percentage.

Replace % sign by 1/100.

Q/100 * Number = Y

## Easy and Simple Tricks to Calculate Percentages Mentally

For example: 100 % of 53 = 100/100 x 53 = 53. |

For example: 1% of 400 = 1/100 x 400 = 4 |

For example: 2% of 300 = 2 x (1/100 of 300) = 2 x 3 = 6. |

For example: 10% of 25 = 1/10 x 25 = 2.5. |

For example: 5% of 40 = ½ x (1/10 x 40) = ½ x 4 = 2. |

For example: 20% of 50 = 2 x (1/10 x 50) = 2 x 5 = 10. |

For example: 50% of 200 = ½ x 200 = 100. |

For example: 25% of 80 = ¼ x 80 = 20. |

For example: 75% of 120 = 3 x ( ¼ x 120) = 3 x 30 = 90. |

For example: 200% of 500 = 2 x 500 = 1000. |

For example: 5% of 20 = 1 and 20% of 5 = 1 |

## Practice Questions

- 75% of 360 = ________
- 10% of 25 = ________
- 50% of 68 = ________
- 20% of 150 = ________
- 5% of 800 = ________

The above tricks will help you solve almost any percentage questions mentally.

**Also Read**

**Mental Maths Tricks - Calculate Faster Than A Calculator in Just 1 Second**

**Simple and Easy Tricks to Remember Trigonometric Formulas and Table**