Estimating sums involving Product and Division of Decimal Numbers

Q. Which of the following is the correct solution to $7.2\times 9.8$ ? Solve by estimation.

1. $52.16$
2. $98.36$
3. $70.56$
4. $75.43$

Q. Nini works at wage of $8.80 per hour in a pottery shop. She has worked for 24.6 hours in a week. Estimate her earnings in that week.

1. $220
2. $225
3. $250
4. None of these

Q. Which of the following is the correct solution to $\frac{17.5\times 42}{2.5}$ ?
Solve by estimation.

1. 294
2. 504
3. 86
4. 384

Q. Estimate the product
$3.5\times 6.89$

1. 28
2. 21
3. 25
4. None of these

Q. Find out the value of the following expression by estimating each number to its nearest unit place:

$\frac{63.1\times 12.5}{6.9\times 12.4}$

1. 9
2. 9.75
3. 9.5
4. 10

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> The number of passengers in each compartment of a train is 43. Calculate the total number of passengers in the train by estimation if there are 9 compartments.

1. 201
2. 387
3. 796

Q. 170.25 m of a particular type of cloth is avialable to make dresses. If each dress uses 9.89 m of cloth. Estimated number of dresses that can be made are

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> The number of passengers in each compartment of a train is 43. Calculate the total number of passengers in the train by estimation if there are 9 compartments.

1. 201
2. 387
3. 796