Multiplication trick Archives

Shortcut to Multiply Any Number from 10-19 by 6

April 2, 2017July 29, 2014 by Bank Exams

Shortcut to Multiply any number from 10 to 19 by 6

Today we shall see a new trick to multiply any number from 10-19 by 6 in seconds

Let us see the steps

Step 1:Assume 10 as base

Step 2:Multiply the base by 6

Step 3:Multiply the unit place digit by 6

Step 4:Add the results obtained in step 2 and step 3 to get your answer

Now, Let us consider an example to understand better

Example 1:14 x 6=?

Step 1: Assuming base as 10

Step 2:Multiplying the base by 10

We get, 10 x 6= 60

Step 3:Multiplying the unit place digit by 6

We get, 4 x 6=24

Step 4:Adding results of step 2 and step 3

We get, 60 + 24 = 84

Ans 14 x 6 = 84

Video

Shortcut to multiply any 2 numbers whose difference is 2

December 17, 2018February 26, 2014 by Bank Exams

Today you will be learning another amazing shortcut to multiply 2 numbers whose difference is 2.This trick is especially effective to use when the number in between the 2 numbers to be multiplied is 5.You will see why.

Shortcut to multiply any 2 numbers whose difference is 2

Let us go through the steps

Step 1:Identify the number in between the 2 numbers.

Step 2:Find the square of the number identified in step 1.

Step 3:Subtract 1 from the result obtained in step 2.

Let us now consider few examples to understand better
Example 1:12 x 14=?
Notice that there is difference of 2 between the numbers 12 and 14.

We shall now apply the trick that we learnt
Step 1:We find that 13 lies in between 12 and 14.

Step 2:Squaring 13 we get
13²=169

Step 3:Subtracting 1 from the result obtained in step 2
We get 169 -1=168

Ans 12 x 14=168

Example 2: 24 x 26=?
Step 1: We find that 25 lies in between 24 and 26.

Step 2: Squaring 25 we get
25²=625
(Use the shortcut trick to square any number ending in 5)

Step 3:Subtracting 1 from the result obtained in step 2
We get 625 -1=624

Ans 24 x 26=624

Example 3: 27 x 29=?

Step 1: We find that 28 lies in between 27 and 29.

Step 2: Squaring 28 we get
28²=784

Step 3:Subtracting 1 from the result obtained in step 2
We get 784 -1=783

Ans 27 x 29=783

Example 4: 17 x 19=?

Step 1: We find that 18 lies in between 17 and 19.

Step 2: Squaring 18 we get
18²=324

Step 3:Subtracting 1 from the result obtained in step 2
We get 324 -1=323

Ans 17 x 19=323

Example 5: 16 x 18=?

Step 1: We find that 17 lies in between 16 and 18.

Step 2: Squaring 18 we get
17²=289

Step 3:Subtracting 1 from the result obtained in step 2
We get 289-1=288

Ans 16 x 18=288

Tip: This trick is most effective to use when you know square of the number in between the 2 numbers.

Shortcut to multiply any 3 digit number by 111

April 2, 2017February 23, 2014 by Bank Exams

Shortcut to multiply any 3 digit number by 111 in seconds

In my previous post, we learnt how the multiply any 2 digit number by 111.Today we shall see the shortcut way to multiply any 3 digit number by 111.

Lets go through the steps below
Step 1:Write down the unit place digit of the 3 digit number.

Step 2:Add unit place digit and tenth place digit and write down the number to the left of the unit place digit number.

Step 3:Add unit place digit, tenth place digit and hundreth place digit and write down the number.

Step 4:Add tenth place digit and hundredth place digit and write down the number.

Step 5:Write down the hundredth place digit.

Now, we shall consider some examples to understand better.

Example 1:123 x 111=?
Step 1:Unit place digit is 3 which we write it down as it is.
_ _ _ _ 3

Step 2:Adding unit place digit and tenth place digit
            We get 3 + 2=5
   _ _ _ 53

Step 3:Adding all the three digits
We get 3 + 2 + 1=6
_ _ 6 53

Step 4:Adding tenth and hundredth place digit
We get 2 + 1=3
_ 3 6 53

Step 5:Hundredth place digit is 1 which we shall write it down.
We get 13653

Ans 123 x 111=13653

Example 2:234 x 111=?
Step 1:Unit place digit is 4 which we write it down as it is.
_ _ _ _ 4

Step 2:Adding unit place digit and tenth place digit
            We get 4 + 3=7
   _ _ _ 73

Step 3:Adding all the three digits
We get 4 + 3 + 2=9
_ _ 9 73

Step 4:Adding tenth and hundredth place digit
We get 3 + 2=5
_ 5 9 73

Step 5:Hundredth place digit is 2 which we shall write it down.
We get 25974

Ans: 234 x 111=25974

Shortcut to multiply any number from 90-99 by 5

January 2, 2023February 12, 2014 by Bank Exams

Shortcut to multiply any number from 90-99 by 5 in seconds

In the previous post we learnt how to multiply any number from 80 to 89 by 5 in seconds.Today we are going to learn another cool trick to multiply any number from 90 to 99 by 5 in seconds.

Let us see the steps

Step 1: Assume the base as 90

Step 2: Multiply the base by 5

Step 3:Multiply the unit place digit by 5

Step 4:Add the results obtained in step 2 and step 3 to get
final answer.

Now lets consider a few examples to understand better

Example 1:93 x 5 = ?

Step 1:We assume the base as 90.

Step 2:Multiplying the base by 5
We get 90 x 5 = 450

Step 3:Multiplying the unit place digit by 5
We get 3 x 5 =15

Step 4:Adding results obtained in step 2 and step 3
We get 450 + 15 = 465

Ans 93 x 5 =465

Example 2:98 x 5 = ?

Step 1:We assume the base as 90.

Step 2:Multiplying the base by 5
We get 90 x 5 = 450

Step 3:Multiplying the unit place digit by 5
We get 8 x 5 = 40

Step 4:Adding results obtained in step 2 and step 3
We get 450 + 40 = 490

Ans 98 x 5 =490

Shortcut to multiply any number from 80-89 by 5

April 2, 2017February 11, 2014 by Bank Exams

Shortcut to multiply any number from 80 to 89 by 5 in seconds

In the previous post we learnt how to multiply any number from 70 to 79 by 5 in seconds.Today we are going to learn another cool trick to multiply any number from 80 to 89 by 5 in seconds.

Let us see the steps

Step 1: Assume the base as 80

Step 2: Multiply the base by 5

Step 3:Multiply the unit place digit by 5

Step 4:Add the results obtained in step 2 and step 3 to get
final answer.

Now lets consider a few examples to understand better

Example 1:82 x 5 = ?

Step 1:We assume the base as 80.

Step 2:Multiplying the base by 5
We get 80 x 5 = 400

Step 3:Multiplying the unit place digit by 5
We get 2 x 5 =10

Step 4:Adding results obtained in step 2 and step 3
We get 400 + 10 = 410

Ans 82 x 5 =410

Example 2:87 x 5 = ?

Step 1:We assume the base as 80.

Step 2:Multiplying the base by 5
We get 80 x 5 = 400

Step 3:Multiplying the unit place digit by 5
We get 7 x 5 = 35

Step 4:Adding results obtained in step 2 and step 3
We get 400 + 35 = 435

Ans 87 x 5 =435