Estimation

Q.

Define estimation?

Q. There are 58 sweets boxes. Each box has 12 sweets. The total number of sweets rounded off to nearest 10 will be .

1. 690
2. 600
3. 770
4. 840

Q. Round off 178 to the nearest hundreds.

1. 200
2. 150
3. 100
4. 180

Q. Find the estimated quotient for $839÷29$ to the nearest ten.

1. 30
2. 28
3. 29
4. 27

Q. The population of a town was 78787 in the year 1991 and 95833 in the year 2001. Estimate the increase in population by rounding off each population to nearest hundreds. [3 MARKS]

Q.

Convert $25km356m79cm3mm$into millimetres. Write the answer in words in

(a) Indian System of Numeration

(b) International System of Numeration

Q.

Estimate each of the following using general rule:

(a) 730 + 998 (b) 796 − 314 (c) 12, 904 + 2, 888

(d) 28, 292 − 21, 496

Make ten more such examples of addition, subtraction and estimation of their outcome.

Q.

Estimate the following sum by rounding off the numbers to their nearest thousands and compare the result with the actual sum: $34,253+5,524$

Q.

Round $54$ to the nearest ten.

Q. Estimate the following numbers to the nearest 100.

1. 600
2. 400
3. 700
4. 300

Q.

188 estimated to the nearest hundreds gives ______.

1. 200
2. 180
3. 100
4. 170

Q. Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate
(by rounding off to nearest tens):
439 + 334 + 4317

Q.

$1\mathrm{Km}$ is equals to how many miles.

Q.

Check if the following rounding off is Correct or not .Correct if it is wrong.

$49730\to 49700$

Q.

Check if the following rounding off is Correct or not .Correct if it is wrong.

$2546\to 2500$

Q.

Estimate to nearest thousand:

$35863-27677$

Q. is a rough calculation of number/quantity for which no exact value is determinable.

1. Estimation
2. Production
3. Population

Q.

Check the following rounding off .Correct if it is wrong.

$53552\to 53000$

Q.

Express $5km245m$ in kilometres.

Q.

Estimate the following sums by rounding off the numbers to their nearest thousands and compare the result with the actual sum.

b) $2,507+3,223$

Q.

Find the smallest and greatest numbers which are rounded off to the nearest hundreds as $900$.

Q.

Estimate the following sum by rounding off the numbers to their nearest thousands and compare the result with the actual sum: $68,283+1,843$

Q. Estimate the product of 5, 994 and 4, 012 by rounding off each of the numbers to the nearest hundreds.

1. 2, 40, 00, 000
2. 2, 00, 00, 000
3. 3, 00, 00, 000
4. None of the above

Q.

Check if the following rounding off is Correct or not .Correct if it is wrong.

$5750\to 5800$

Q.

Estimate the following sum to its nearest hundred:

872+569

Q. There are 120 passengers in one bus and 55 passengers in another bus. How many passengers are there in all? Round off the answer to the nearest hundred.

1. 300
2. 100
3. 200
4. 150

Q.

Estimate the following product :$958\times 387$

Q.

Estimate the following to the nearest ten.

$351+249$

Q.

Check the following rounding off .Correct if it is wrong.

$7805\to 7000$

Q. Round off 2784 to the nearest hundreds.

1. 2800
2. 2700
3. 2750
4. 2650