Jayashri Bhattacharya and Tarika Dhawan Solutions for Exercise 4: INNINGS

Estimate the following by rounding off each number to the nearest ten:
$291\times 321$

Estimate the following by rounding off the number to its nearest ten:
$1465\times 876$

Estimate the following by rounding off the number to its nearest ten:
$898÷28$

Estimate the following by rounding off the number to its nearest ten:
$632÷31$

Write whether the following statement is true or false. Also, correct the false statement.
Estimated sum of $4162$ and $21319$ rounded off to the nearest hundred is $\mathrm{25,400}$

Write whether the following statement is true or false. Also, correct the false statement.
When rounded off to the nearest thousand, the number $\mathrm{63,634}$ becomes $\mathrm{63,600}.$

Write whether the following statement is true or false. Also, correct the false statement.
When the number $\mathrm{3,90,003}$ is rounded off to the nearest lakh, it gives $\mathrm{4,00,000}$

If there are $4056$ cartons of books in a warehouse and each carton has $53$ books, which is a better estimate of the total number of books $1,70,000$ or$\mathrm{2,00,000}$.