Shortcut to multiply any 2 numbers whose difference is 2

Shortcut to multiply any 2 numbers whose difference is 2

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.

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