How to Find Cube of a Number

Dear Readers,

Today, I am sharing the shortcut tricks by which you can make cube of a number. In my previous two article I shared you the shortcut tricks of “how to find square of any number”. But today I am able to show you this trick only for some numbers (1-20 & 90-110). Just follow the rules how number makes cube. I am trying to find out the shortcut trick for other numbers. Whenever I will find it, I will share you.

How to Find Cube of a Number

Rule: 1 Number from 1 to 10

Please don’t use any rules for these numbers. Try to memorize.

1³ = 1

2³ = 8

3³ = 27

4³ = 64

5³ = 125

6³ = 216

7³ = 343

8³ = 512

9³ = 729

10³ = 1000

Rule: 2 Number Close to 10

10 + 3X | 3X² | X³      (X will take -Value when the number is below 10 or vice versa & the digit will be one after |  )

If we find the cube of 12 (close to 10), then

12³= 10 + 3X | 3X² | X³         

12³ = 10 + 3.2 | 3.2²| 2³

12³ = 10 + 6 | 3.4| 8

12³ = 16 | 12| 8

12³ = 1728

If we find the cube of 16 (close to 10), then

16³= 10 + 3X | 3X² | X³         

16³ = 10 + 3.6 | 3.6²| 6³

16³ = 10 + 18 | 3.36| 216

16³ = 28 | 108| 216

16³ = 28 | 129| 6

16³ = 4096

Rule: 3 Number Close to 100

100 + 3X | 3X² | X³    (X will take -Value when the number is below 100 or vice versa & the digit will be two after |  )

If we find the cube of 105 (close to 100), then

105³= 100 + 3X | 3X² | X³     

105³ = 100 + 3.5 | 3.5²| 5³

105³ = 100 + 15 | 3.25| 125

105³ = 115 | 75| 125

105³ = 115 | 76| 125

105³ = 1157625

If we find the cube of 96 (close to 100), then

96³= 100 + 3X | 3X² | X³       

96³ = 100 - 3.4 | 3.4²| -4³

96³ = 100 - 12 | 3.16| -64

96³ = 88 | 48 | -64

96³ = 88 | 47 | 36

96³ = 884736

Rule: 4 Number Close to 20, 30, 40, and 50

Coming soon.

N.B. : Don’t try these tricks for other numbers. 

Questions from this topic:

Q.1: 105³ + 15³ + 5³ = ?

Q.2: 95³ - 5³ + 15³ = ?

Q.3: 109³ = ?

Q.4: 1³ + 11³ = ?

Thanks.