Question

find qube root of 857375 by estimation method

Answer 1

we have,

857375.

this can be written in the estimation technique by grouping 3 numbers in each group

group
2 group
1
857 375
___ ___

the cube root of a perfect cube ending with 5 will have 5 in units

857375 will have 5 in units place.

Moving to the second step,
which says that it should lie between cubes of two consecutive number and the tens digit should be counted while considering the smaller cube

we have 857.
it lies between the cube of 9 and 10
${9}^{3} = 729 < 875 < {10}^{3 } = 1000$
therefore,
the tens digit will be 9

therefore,
$\sqrt[3]{857375 } = 95$

Answer 2

Answer:

Step-by-step explanation:

95