Estimating Difference for Large Numbers

Q.

What is the general rule of estimation

Q.

73 rounded off to the nearest ten is 70, because 73 is closer to 70 than to 80. But 76 is rounded off to

1. 80

2. 60

3. 70

4. 90

Q. Estimate the sum by rounding off each addend to the nearest thousands.
4, 372 + 8, 134

1. 15000
2. 14000
3. 12000
4. 10000

Q.

Question 178

Estimate each of the following by rounding off each number to nearest tens.
(a) 11963 - 9369
(b) 76877 - 7783
(c) 10732 - 4354
(d) 78203 - 16407

Q. Estimate the difference between 489342 and 48365 by rounding off numbers to the nearest
(i) ten thousands
(ii) thousands

1. 4, 40, 000 and 4, 41, 000
2. 4, 41, 000 and 4, 40, 000
3. 5, 00, 000 and 4, 40, 000
4. 4, 50, 000 and 4, 41, 000

Q.

The difference of (673 - 258) to nearest hundred is

1. 400

2. 600

3. 300

4. 200

Q.

Round off $4,639$ to the nearest tens, hundred and thousands.

Q.

Question 177

Estimate each of the following by rounding off each number to nearest hundreds.

(a) 874 + 478

(b) 793 + 397

(c) 11244 + 3507

(d) 17677 +13589

Q. Estimate the difference of 10, 512 and 21, 340 by rounding off each number to its nearest thousand.

1. 15, 000
2. 12, 000
3. 10, 500
4. 10, 000

Q.

In an examination, a student multiplied 4341393 by 34 instead of 43. By how much his answer less than the correct answer?

1. 29072537

2. 39072537

3. 49072537

4. 59072537

Q.

Sum of 178 and 69 to nearest hundred is

1. 250

2. 200

3. 100

4. 300

Q. Estimate the sum by rounding off each addend to the nearest thousands.
96, 304 + 63, 179

1. 1, 00, 000
2. 2, 00, 000
3. 1, 50, 000
4. 1, 59, 000

Q.

Sum of estimated value of $512857$ to nearest ten thousand and estimated value of $34$ to nearest tens is ?

1. $510030$

2. $512900$

3. $512910$

4. $51200$

Q.

The last instalment of your school fees is to be paid. The total fee to be paid was ₹ 24, 399 and you have already paid two instalments of ₹ 8, 745. So, the estimated (to nearest thousands) amount that you have to pay now is ___

Q. Joe went to the market with ₹1000. He bought a shirt for ₹375. How much money is left with him? Estimate an approximate value by rounding off to the nearest hundred.

1. ₹600
2. ₹1400
3. ₹300
4. ₹600

Q.

Estimate: 5, 873 - 436

1. 5600

2. 5500

3. 6000

4. 5900

Q.

Raj had ₹ 1398 in his wallet. He spent ₹ 526 on a movie. Estimate the money left with him to the nearest hundred.

1. 900

2. 800

3. 872

4. 850

Q.

Aman multiplied $6241$ by $64$ instead of multiplying by $46$. By how much was his answer greater than the correct answer?

Q. Raj had ₹ 1398 and he has spent ₹ 526 on shopping. Estimate the money left with him to the nearest hundred.

1. 900

Q.

The estimate of $415\times 97$ by rounding off them to its greatest place

Q. Roni went to the market with ₹1000. She bought a saree for ₹375, a pair of shoes for ₹155 and a shawl for ₹282. How much money is left with her, if each purchase was made by rounding off to the nearest ten?

1. ₹200
2. ₹180
3. ₹190
4. ₹170

Q.

Estimate: 5.87 - 4.36

1. 5900

2. 6000

3. 5600

4. 5500

Q.

Estimate the difference of 5, 60, 312 and 4, 19, 333 by rounding off each number to its nearest ten thousands.___

Q.

Estimate $49.5\times 77$ by rounding off to their greatest place

Q. Estimate the product of 567 and 423 by rounding off each number to the nearest hundred.

Q. Joe went to the market with ₹1000. He bought a shirt for ₹375. How much money is left with him? Estimate an approximate value by rounding off to the nearest hundred.

Q. List all numbers which are rounded off to nearest ten as 370.

Q. Estimate the difference of 10, 512 and 21, 340 by rounding off each number to its nearest thousand.

Q.

323 + 13487 estimated to nearest hundred = ?

1. 13000

2. 100

3. 13800

4. 13810

Q. Estimate the following using general rule:

$730+948$