Estimation of Large Numbers

Observe the numbers in units place: Write the estimated $10$'s value for the following number:

Ten's estimated value of $93$ is _____.

Observe the numbers in units place: Write the estimated $10$'s value for the following number:

Ten's estimated value of $78$ is _____.

Observe the numbers in units place: Write the estimated $10$'s value for the following number:

Ten's estimated value of $85$ is _____.

Observe the numbers in units place: Write the estimated $10$'s value for the following number:

Ten's estimated value of $66$ is _____.

Observe the numbers in units place: Write the estimated $10$'s value for the following number:

Ten's estimated value of $23$ is _____

Answer the following question by observing number line.

Ten's estimated value of $56$ is _____

Answer the following question by observing number line.

Ten's estimated value of $54$ is _____

Answer the following question by observing number line.

Ten's estimated value of $55$ is _____

Answer the following question by observing number line.

Ten's estimated value of $57$ is _____

Answer the following question by observing number line.

Ten's estimated value of $52$ is _____

What is the estimated number must be added to $203$ to get a number whose digits are reversed of the given number?

Round the number $28$ to the nearest tens.

Round off the following number to nearest thousands.

$7664$

Round off the following number to nearest thousands.

$4689$

Round off the following number to nearest thousands.

$9266$

Round off the following number to nearest thousands.

$8667$

Round off the following number to nearest thousands.

$6343$

Round off the following number to nearest thousands.

$7674$

Round off the following number to nearest thousands.

$4389$

Round off the following number to nearest thousands.

$8156$