Easily multiply any number by 9

 To easily multiply any number by 9 use the following magic trick.Use the following magic trick to easily multiply any number by 9.


Today we have a special Maths Trick for you! We are going to learn a very easy trick for multiplying numbers that fit into the 9 times table in this trick. This is a very simple method to multiply by 9, without the need to perform the full multiplication.


I would ask all our readers to continue reading this blog and pass on by sharing it with your friends, family, classmates and students. Our goal is to render Mathematics easy and interesting, using fun and simple tricks. There are loads of other useful Maths tricks, activities and ideas for learning on this blog.


So, let's learn our Magic Trick to Multiply by 9!


## ✨ Question: 18 × 9 = ?


You should have the 9 times table memorized before trying this trick!


We know that:


**18 ÷ 9 = 2**


Now with the answer 2, leave it at the unit place.


Then subtract out the same number - 2 - from 18:


**18 − 2 = 16**


Now put the answer **2** after 16:


**162**


Therefore:


### ✅ 18 × 9 = 162


Isn't that easy? Let's work on some more examples.


---


## ✨ Example 2: 27 × 9 = ?


First divide 27 by 9:


**27 ÷ 9 = 3**


Now subtract 3 from 27:


**27 − 3 = 24**


Write the number 3 in the ones' position:


**243**


Therefore:


### ✅ 27 × 9 = 243


---


## ✨ Example 3: 36 × 9 = ?


**36 ÷ 9 = 4**


**36 − 4 = 32**


Place 4 in the units position:


**324**


Therefore:


### ✅ 36 × 9 = 324


---


## ✨ Example 4: 45 × 9 = ?


**45 ÷ 9 = 5**


**45 − 5 = 40**


Place the number 5 in the ones column:


**405**


Therefore:


### ✅ 45 × 9 = 405


---


## ✨ Example 5: 63 × 9 = ?


**63 ÷ 9 = 7**


**63 − 7 = 56**


Place 7 at the ones place:


**567**


Therefore:


### ✅ 63 × 9 = 567


---


## ✨ Example 6: 72 × 9 = ?


**72 ÷ 9 = 8**


**72 − 8 = 64**


Place 8 in the unit's place:


**648**


Therefore:


### ✅ 72 × 9 = 648


---


## 🧠 Remember the Trick


For a number that is a multiple of 9:


**1. Divide the number by 9.**

**2. Take away the answer from the number you originally made.

**3. Carry the answer of the division to the unit place.


For example:


**81 ÷ 9 = 9**

**81 − 9 = 72**

Put 9 at the unit place → **729**


So:


### ✅ 81 × 9 = 729


With practice, this trick will become very easy. Test yourself and see how quickly you can answer these questions!


## 📝 Practice Set


Use magic trick to solve these:


1. 9 × 9 = ?

2. 18 × 9 = ?

3. 27 × 9 = ?

4. 36 × 9 = ?

5. 45 × 9 = ?

6. 54 × 9 = ?

7. 63 × 9 = ?

8. 72 × 9 = ?

9. 81 × 9 = ?

10. 90 × 9 = ?

11. 99 × 9 = ?

12. 108 × 9 = ?


### ✅ Answers


1. 81

2. 162

3. 243

4. 324

5. 405

6. 486

7. 567

8. 648

9. 729

10. 810

11. 891

12. 972


Mathematics is not an arduous endeavor, but is achievable if approached properly. Continue to practise, continue to learn and continue to enjoy Mathematics!**


**By Danish**

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