
Cube means the number is multiplied itself by 3 times. Cube denoted by (3). Example 53=5×5×5 =125. It is easy to find small number cube problem occurs for big numbers.
Bellow this trick video provided it will help you to understand this trick better.
Related topics:-
Find cube root of any number
short trick:-
It is very simple let’s start
Let’s take example 123
Step 1:– Here 1st number is 1 and 2nd number is 2
Write this way
13_+12_+ 1_+ _ (1st number is 1 start from 1)
Step 2:-
_+_ 2+ _22+ 23 (2 is 2nd number from ending start writing)
Step 3:-
Marge step 1 and step 2
13+12×2+ 1×22+ 23
By solving this we get:-1+2+4+8
Step 4:- double middle numbers 4 8 (double of 2 is 4 and double of 4 is 8)
Step 5:- adding these numbers 1+6+12+8 (2 and its double 4 added ,4 and its double 8 added)
Final step:-if there is two digit number add 1st digit to previous number and 2nd digit sit as it is
1+6+12+8
Now we get result 123= 8(single number sit as it is)
28 (from 12 2 sit directly ,addition of to 1 previous number that 6)
728(6+1=7)
1728(1 sit as it is )
next question 143
Step 1:– Here 1st number is 1 and 2nd number is 4
Write this way
13_+12_+ 1_+ _ (1st number is 1 , start from 1)
Step 2:-
_+_ 4+ _42+ 43 (2 is 2nd number from ending start writing)
Step 3:-
Marge step 1 and step 2
13+12×4+ 1×42+ 43
By solving this we get:-1+4+16+64
Step 4:- double middle numbers 4 and 16 (double of 4 is 8 and double of 16 is 32)
Step 5:- add these numbers 1+12+48+64 (4 and its double 8 added ,16 and its double 32 added)
Final step:-if there is two digit number add 1st digit to previous number and 2nd digit sit as it is
1+12+48+64
Now we get result 143=
4(single number sit as it is and 6 added previous number)
44 (6+48=54, 4 comes 2nd places and and 5 added to previous number)
744(5+2=7 and i 1 added to previous number)
2744(1 +1=2 )
Try to solve some example by yourself.It helps a lot for better under standing.
Some important cube table:-
13 |
1 |
23 |
8 |
33 |
27 |
43 |
64 |
53 |
125 |
63 |
216 |
73 |
343 |
83 |
512 |
93 |
729 |
103 |
1000 |
113 |
1331 |
123 |
1728 |
133 |
2197 |
143 |
2744 |
153 |
3375 |
163 |
4096 |
173 |
4913 |
183 |
5832 |
193 |
6859 |
203 |
8000 |