Question

How to make a cube of all no. Short trick

Answer 1

Answer:

First remember cube of a number from 1 to 10

Step-by-step explanation:

(Cube of a Number End with Zero )

Ex. 1 : Find the cube of  70 ( 70³= ? )

Simple we can write the value of  7³  and add three zeros in right side. i.e 7³  = 343  and  70³ = 343000

( Cube of a number just near to ten place)

Ex. 1 : Find the cube of 11 ( 11³= ? )

Use the simple algebra formula  (a + b)³ = a³ + 3a²b + 3ab² + b³.  

we can write 11³  = ( 10 + 1 )³ . So here take a = 10 , b = 1 then

( 10 + 1 )³ = 1000 + 300 + 30 + 1 = 1331.

hope that it is useful

Answer 2

ANSWER

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