Worksheet on Rounding Off Number | Rounding off Number

In worksheet on rounding off number we will solve 10 different types of problems.

I. Rounding Off to the Nearest Ten:

To round off a number to the nearest 10, we look at the digit at the ones place. If it is equal or more than 5, we replace it by 0 and increase the tens digit by 1. If the ones digit is less than 5, replace it by 0 and keep the tens digit as it is. In both the cases, the remaining digits (If any) of the number remain unchanged.

II. Rounding Off to the Nearest Hundred:

To round off a number to the nearest 100, we look at the digit at tens place. If it is less than 5, we replace it and the ones digit by zero. If it is equal to or more than 5, we replace each of the digits at ones and tens places by 0 and add 1 to digit at hundreds place. In both cases, the remaining digits (if any) of the number remain unchanged.

III. Rounding Off to the Nearest Thousand:

To round off a number to the nearest 1000, we look at the digit at hundreds place. If it is equal to or greater than 5, replace it along with ones and tens digits by zeroes, and increase the digit at thousands place by 1. If the digit at the hundreds place is less than 5, replace each of the digits at hundreds, tens and ones places by 0. In both the cases, the remaining digits remain unchanged.

Rounding Numbers Worksheet – 1

1. Round off to nearest 10 each of the following numbers:

(a) 14

(b) 57 

(c) 61 

(d) 819 

(e) 7729

2. Round off to nearest 100 each of the following numbers:

(a) 5183 

(b) 796 

(c) 360 

(d) 7254

(e) 49285 

3. Round off to nearest 1000 each of the following numbers:

(a) 3789

(b) 41338

(c) 89952

(d) 14239

(e) 79876

4. Round off to nearest 10000 each of the following numbers:

(a) 16389

(b) 79838

(c) 17852

(d) 715259

(e) 559876

5. Round off to nearest 10 and 1000.

(a) 62737

(b) 82990

(c) 289923

(d) 17437

(e) 53728

6. Round off to the nearest one (units place):

(a) 57.326

(b) 8.808

(c) 290.752

(d) 1394.301

(e) 434.28

7. Round off to correct one place of decimal:

(a) 99.39

(b) 7.84

(c) 375.34

(d) 72.645

(e) 83.38

8. Round off to correct two places of decimal:

(a) 7.523

(b) 35.095

(c) 89.746

(d) 88.888

(e) 49.226

9. Divide 12.73 by 8 and round off correct to two decimal places.

10. Find the value of 200/33 up to one place decimal.

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Answers:

1. (a) 14 → 10

(b) 57 → 60

(c) 61 → 60

(d) 819 → 820

(e) 7729 → 7730

2. (a) 5183 → 5200

(b) 796 → 800

(c) 360 → 400

(d) 7254 → 7300

(e) 49285 → 49300

3. (a) 3789 → 4000

(b) 41338 → 41000

(c) 89952 → 90000

(d) 14239 → 14000

(e) 79876 → 80000

4. (a) 16389 → 20000

(b) 79838 → 80000

(c) 17852 → 20000

(d) 715259 → 720000

(e) 559876 → 560000

5. (a) 62740; 63000

(b) 82990; 83000

(c) 289920; 290000

(d) 17440; 17000

(e) 53730; 54000

6. (a) 57.326 → 57

(b) 8.808 → 9

(c) 290.752 → 291

(d) 1394.301 → 1394

(e) 434.28 → 434

7. (a) 99.39 → 99.4

(b) 7.84 → 7.8

(c) 375.34 → 375.3

(d) 72.645 → 72.6

(e) 83.38 → 83.4

8. (a) 7.523 → 7.52

(b) 35.095 → 35.10

(c) 89.746 → 89.75

(d) 88.888 → 88.89

(e) 49.226 → 49.23

9. 1.59

10. 6.1

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Rounding Number Worksheet – 2

1. Round off each number to the nearest 10:

(a) 31

(b) 49

(c) 17

(d) 88

(e) 67

(f) 223

(g) 52

(h) 99

(i) 37

Answer:

1. (a) 31 → 30

(b) 49 → 50

(c) 17 → 20

(d) 88 → 90

(e) 67 → 70

(f) 223 → 220

(g) 52 → 50

(h) 99 → 100

(i) 37 → 40

2. Round off each number to the nearest 100:

(a) 512

(b) 455

(c) 321

(d) 670

(e) 280

(f) 902

(g) 777

(h) 849

(i) 650

Answer:

2. (a) 512 → 500

(b) 455 → 500

(c) 321 → 300

(d) 670 → 700

(e) 280 → 300

(f) 902 → 900

(g) 777 → 800

(h) 849 → 800

(i) 650 → 700

3. Round off each number to the nearest 1000:

(a) 1100

(b) 7820

(c) 5040

(d) 6251

(e) 4545

(f) 9258

(g) 3900

(h) 8621

(i) 2092

Answer:

3. (a) 1100 → 1000

(b) 7820 → 8000

(c) 5040 → 5000

(d) 6251 → 6000

(e) 4545 → 5000

(f) 9258 → 9000

(g) 3900 → 4000

(h) 8621 → 9000

(i) 2092 → 2000

4. Write your answers in words:

(a) 502 (Round off to the nearest 100)

(b) 92 (Round off to the nearest 10)

(c) 1592 (Round off to the nearest 1000)

(d) 5098 (Round off to the nearest 1000)

(e) 8600 (Round off to the nearest 1000)

(f) 193 (Round off to the nearest 100)

(g) 41 (Round off to the nearest 10)

Answer:

4. (a) 502 → nearest 100 = 500 → Five hundred

(b) 92 → nearest 10 = 90 → Ninety

(c) 1592 → nearest 1000 = 2000 → Two thousand

(d) 5098 → nearest 1000 = 5000 → Five thousand

(e) 8600 → nearest 1000 = 9000 → Nine thousand

(f) 193 → nearest 100 = 200 → Two hundred

(g) 41 → nearest 10 = 40 → Forty

Rounding Number Worksheet – 3

I. Round off the following numbers to the nearest ten.

(i) 56

(ii) 512

(iii) 42

(iv) 829

(v) 376

(vi) 1225

(vii) 493

(viii) 4327

(ix) 513

(x) 672

(xi) 856

(xii) 392

(xiii) 773

(xiv) 832

(xv) 491

(xvi) 1329

(xvii) 1238

(xviii) 3488

(xix) 8824

(xx) 9932

(xxi) 307

(xxii) 438

(xxiii) 7904

(xxiv) 3381

Answer:

I. (i) 60

(ii) 510

(iii) 40

(iv) 830

(v) 380

(vi) 1230

(vii) 490

(viii) 4330

(ix) 510

(x) 670

(xi) 860

(xii) 390

(xiii) 770

(xiv) 830

(xv) 490

(xvi) 1330

(xvii) 1240

(xviii) 3490

(xix) 8820

(xx) 9930

(xxi) 310

(xxii) 440

(xxiii) 7900

(xxiv) 3380

II. Round off the following numbers to the nearest hundred.

(i) 227

(ii) 1325

(iii) 456

(iv) 860

(v) 567

(vi) 9199

(vii) 968

(viii) 7568

(ix) 317

(x) 697

(xi) 4325

(xii) 6295

(xiii) 725

(xiv) 5268

(xv) 494

(xvi) 1428

(xvii) 4256

(xviii) 6389

(xix) 32211

(xx) 42131

(xxi) 6342

(xxii) 2309

(xxiii) 1693

(xxiv) 7162

Answer:

II. (i) 200

(ii) 1300

(iii) 500

(iv) 900

(v) 600

(vi) 9200

(vii) 1000

(viii) 7600

(ix) 300

(x) 700

(xi) 4300

(xii) 6300

(xiii) 700

(xiv) 5300

(xv) 500

(xvi) 1400

(xvii) 4300

(xviii) 6400

(xix) 32200

(xx) 42100

(xxi) 6300

(xxii) 2300

(xxiii) 1700

(xxiv) 7200

III. Round off the following numbers to the nearest thousand.

(i) 4375

(ii) 2553

(iii) 7501

(iv) 8533

(v) 6859

(vi) 7546

(vii) 6243

(viii) 9258

(ix) 34221

(x) 12143

(xi) 63709

(xii) 86438

(xiii) 98493

(xiv) 62709

(xv) 82429

(xvi) 77389

(xvii) 139403

(xviii) 362590

(xix) 662142

(xx) 832416

Answer:

III. (i) 4000

(ii) 3000

(iii) 8000

(iv) 9000

(v) 7000

(vi) 8000

(vii) 6000

(viii) 9000

(ix) 34000

(x) 12000

(xi) 64000

(xii) 86000

(xiii) 98000

(xiv) 63000

(xv) 82000

(xvi) 77000

(xvii) 139000

(xviii) 363000

(xix) 662000

(xx) 832000

IV. Round off the following numbers to the nearest ten-thousand.

(i) 23456

(ii) 78101

(iii) 56789

(iv) 18230

(v) 67890

(vi) 70172

(vii) 84567

(viii) 35740

(ix) 38241

(x) 63231

(xi) 73842

(xii) 38467

(xiii) 532548

(xiv) 282432

(xv) 568432

(xvi) 194621

(xvii) 2117431

(xviii) 4438213

(xix) 4383212

(xx) 7384201

(xxi) 4812431

(xxii) 3118038

(xxiii) 67813216

(xxiv) 52538024

Answer:

IV. (i) 20000

(ii) 80000

(iii) 60000

(iv) 20000

(v) 70000

(vi) 70000

(vii) 80000

(viii) 36000

(ix) 40000

(x) 60000

(xi) 70000

(xii) 40000

(xiii) 530000

(xiv) 280000

(xv) 570000

(xvi) 190000

(xvii) 2120000

(xviii) 4440000

(xix) 4380000

(xx) 7380000

(xxi) 4810000

(xxii) 3120000

(xxiii) 67810000

(xxiv) 52540000

V. Round off the following as directed.

(i) 40, 80, 290, 130

(ii) 300, 500, 2300, 1800

(iii) 1000, 6000, 4000, 14000

(iv) 50000, 130000, 280000, 2350000

(v) 700000, 500000, 1700000, 1000000

(vi) 2000000, 9000000, 2000000, 4000000

Answer:

V. (i) 420 people

(ii) 7800 students

(iii) 1300000

(iv) No, 12300

● Rounding Numbers.

Round off to Nearest 10.

Round off to Nearest 100.

Round off to Nearest 1000.

Rounding off Decimal Fractions.

Correct to One Decimal Place.

Correct to Two Decimal Place.

Worksheet on Rounding off number.

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