A Short Trick to Divide Any Number Ending in Zero by 5

 My aim is to make "Maths" enjoyable and easy for all students who are afraid with the mention of Maths. A lot of students think that maths is hard yet when they learn it the right way and with understanding, then it is a breeze.


I make it a habit to post numerous articles about mathematics and education on my blog. The blogs are created with the idea that students will be able to get rid of their fear of Maths and also get a proper idea of how they can use the concepts they are learning in their daily life. The study of mathematics is not confined to the classroom; it is a way of dealing with everyday problems. Maths is used in our lives in lots of ways, like working out costs and discounts, managing time and measuring things.


Before learning advanced tricks and shortcuts, however, students need to have a good foundation. Math is easier and more fun to learn when you have solid math skills. All students should be able to memorize multiplication facts. They should also know and use square and cube numbers as these are used often in many mathematical calculations. Once students understand the fundamentals, they can master new techniques and hacks.


In this lesson we will learn a very easy technique that allows us to divide any number that ends with a zero by 5. This is a way to make calculations easier for students to do without the long division.


Dividing a number ending in zero by 5 can be done in two ways.There are two ways to divide numbers that end in zero by 5.


If a number is terminated by 0, you can follow these simple steps:


1. Ignore the zero in the unit place.

3. Subtract that number from 10.

3. Multiply that number by 2.

4. The result will be the answer.


### Example 1: 40 ÷ 5


Let us divide 40 by 5.


* Ignore the zero at the end.

* The remaining number is 4.

* Multiply 4 by 2.


4 × 2 = 8


Therefore:


40 ÷ 5 = 8


This can be checked by normal division and will yield the same result.


### Example 2: 150 ÷ 5


Now let us divide 150 by 5.


Ignore the final '0'

There are 15 more balloons.

* Multiply 15 by 2.


15 × 2 = 30


Therefore:


150 ÷ 5 = 30


Again, the answer is the same as the result of the normal division.


What is the reasoning behind this trick?


When a number ends in zero, it means the number is a multiple of 10. Since:


10 ÷ 5 = 2


we can just drop the zero (which is 10 times) and double the number that is left. This helps us to get the correct answer quickly and accurately.


## Conclusion


Mathematics is simple if we grasp the concepts and do not have to memorize them. Things get easier with less time and more confidence with simple hacks like this one. Students who are used to these methods will be able to calculate much easier and quicker if they practise these methods regularly. Success in mathematics begins with a solid foundation, practice and a positive attitude. Anyone can be taught maths and enjoy it with the right approach and guidance.

## Practice Questions


Use the shortcut method to divide the following numbers by 5. Remember:


**Step 1:** Ignore the zero at the end.

**Step 2:** Multiply the remaining number by 2.


### Solve These Questions


1. 20 ÷ 5 = ______

2. 60 ÷ 5 = ______

3. 90 ÷ 5 = ______

4. 120 ÷ 5 = ______

5. 180 ÷ 5 = ______

6. 250 ÷ 5 = ______

7. 340 ÷ 5 = ______

8. 450 ÷ 5 = ______

9. 520 ÷ 5 = ______

10. 700 ÷ 5 = ______


### Challenge Questions


11. 1,250 ÷ 5 = ______

12. 2,340 ÷ 5 = ______

13. 4,500 ÷ 5 = ______

14. 7,120 ÷ 5 = ______

15. 9,850 ÷ 5 = ______


### Answers


1. 4

2. 12

3. 18

4. 24

5. 36

6. 50

7. 68

8. 90

9. 104

10. 140

11. 250

12. 468

13. 900

14. 1,424

15. 1,970


**Tip:** Practice these questions several times until you can solve them mentally within a few seconds. The more you practice, the faster and more confident you will become in mathematics.

By: Danish

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