Question

Guys can you explain how to do estimation method of 4913

Answer 1

Answer:

Finding cube root by estimation

Make group of 3 digit, starting from right.

The unit digit of cube root will be. Unit digit of cube root of 857375 = Unit digit of cube root of 375. Since 375 ends in 5, it's cube root will end in 5. (As 5 3 = 12 5 , 1 5 3 = 337 5 )

Now, for second group. 8 5 7. We note that. 9 3 = 729. & 10 3 = 1000. So, 729 < 857 < 1000.

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Answer 2

Answer

Estimation to nearest tens:-

4910

Estimation to nearest hundreds:-

4900

Explanation

for thens: you just have to check if the number is closer to the tens that comes before if or after it

for hunders: just check if the number us closer to the 100's that comes before it or after it

and eg.if the no. was 4915 then it will be rounded off to 4920....