Subtraction of 3-Digit Numbers without Regrouping

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Learn subtraction of 3-digit numbers without regrouping in an easy and fun way. Here you will find step-by-step explanations, solved examples, practice worksheets, and word problems to help children understand how to subtract 3-digit numbers without borrowing. This topic is important for building strong mental math and place value skills in Grade 2 and Grade 3 mathematics.

In subtraction without regrouping, each digit in the minuend is greater than or equal to the corresponding digit in the subtrahend, so borrowing is not needed. Students can subtract the ones, tens, and hundreds separately with confidence. The worksheets and exercises on this page are designed to improve accuracy, speed, and problem-solving ability through regular practice.

Parents, teachers, and students can use these printable subtraction activities for classroom learning, homework, revision, and math practice at home.

Subtraction of 3-digit numbers without regrouping are explained here with examples.

1. Ron has a ream of paper having 140 sheets in it. He has used 40 sheets for his project report. How many sheets are left in the ream?

Solution:

To find out the number of sheets left, we will perform subtraction.

To subtract 3-digit numbers, the numbers are written one
below the other.

While subtracting 3 digit number, we subtract ones digit
first, then tens digit and finally the hundreds digit.

$Subtraction of 3-Digit Numbers without Regrouping$

So, 100 pages are left with Ron.

2. Subtract 354 from 699.

Solution:

Step I: Arrange the numbers vertically.

Step II: First subtract the ones column. 9 – 4 = 5

Step III: Now, subtract the tens column. 9 – 5 = 4

Lastly, subtract the hundreds column. 6 – 3 = 3

$Subtracting 3-Digit Numbers without Regrouping$

Thus, 699 – 354 = 345

3. Subtract 312 from 653.

$3-Digit Subtraction$

Step I: Arrange the number in coloumns of tens and ones.

Step II: Subtract ones.

Step III: Then, subtract tens.

Step IV: At last, subtract hundreds.

4. Subtract 423 from 687.

Step I: Arrange the numbers in hundreds, tens and ones.

H T O

6 8 7

– 4 2 3

____________

Step II: Subtract the ones.

H T O

6 8 7

– 4 2 3

Step III: Subtract the tens.

H T O

6 8 7

– 4 2 3

6 4

Step III: Subtract the hundreds.

H T O

6 8 7

– 4 2 3

2 6 4

Thus, 687 – 423 = 264

5. Let us subtract 136 from 459.

Write the numbers one below the other as shown.

$3-Digit Number Subtraction$

Step I: Subtract the ones.

9 ones – 6 ones = 3 ones

Write 3 in the ones place.

Step II: Subtract the tens.

5 tens – 3 tens = 2 tens

Write 2 in the tens place.

Step III: Subtract the hundreds.

4 hundreds – 1 hundred = 3 hundreds

Write 3 in the hundreds place.

The difference is 323.

6. A train carried 389 passengers. At a station, 272 of them got off. How many passengers were left in the train?

Solution:

389 – 272 = ?

Step I:

Subtract the ones.

9 – 2 = 7

Write 7 in the ones place.

Step II:

Subtract the tens.

8 – 7 = 1

Write 1 in the tens place.

Step III:

Subtract the hundreds.

3 – 2 = 1

Write 1 in the hundreds place.

So, 117 passengers are left in the train.

Worksheet on Subtraction of 3-Digit Numbers without Regrouping:

I. Subtract the following 3-Digit Numbers without Regrouping:

(i)

H T O

3 4 4

– 1 2

____________

(ii)

H T O

4 6 8

– 3 4

____________

(iii)

H T O

8 8 8

– 2 1

____________

(iv)

H T O

2 8 6

– 5 0

____________

(v)

H T O

9 3 2

– 2 0

____________

(vi)

H T O

6 7 8

– 1 6

____________

(vii)

H T O

7 6 8

– 5 2

____________

(viii)

H T O

8 4 5

– 2 1

____________

(ix)

H T O

9 3 9

– 1 7

____________

(x)

H T O

5 2 6

– 1 5

____________

(xi)

H T O

3 6 5

– 4 4

____________

(xii)

H T O

8 4 5

– 4 3 2

____________

(xiii)

H T O

2 4 3

– 1 2 2

____________

(xiv)

H T O

7 5 4

– 2 1 2

____________

(xv)

H T O

8 3 5

– 8 3 4

____________

(xvi)

H T O

8 7 6

– 2 2 1

____________

(xvii)

H T O

4 5 7

– 2 3 5

____________

(xviii)

H T O

9 9 9

– 3 3 3

____________

(xix)

H T O

7 4 7

– 3 2 4

____________

(xx)

H T O

8 7 8

– 4 2 5

____________

(xxi)

H T O

9 7 5

– 3 6 1

____________

(xxii)

H T O

8 6 7

– 3 3 4

____________

Answer:

I. (i) 332

(ii) 434

(iii) 867

(iv) 236

(v) 912

(vi) 662

(vii) 716

(viii) 824

(ix) 922

(x) 511

(xi) 321

(xii) 413

(xiii) 121

(xiv) 542

(xv) 1

(xvi) 655

(xvii) 222

(xviii) 666

(xix) 423

(xx) 453

(xxi) 614

(xxii) 533

II. Subtract the following Numbers as shown:

(i)

H T O

2 4 9

– 3 1

__2___1___8_

(ii)

H T O

8 8 2

– 7 1

____________

(iii)

H T O

7 5 6

– 3 1

____________

(iv)

H T O

6 9 5

– 2 2 3

____________

(v)

H T O

4 8 7

– 3 2 7

____________

(vi)

H T O

7 4 3

– 4 2 2

____________

(vii)

H T O

3 4 9

– 2 6 0

____________

(viii)

H T O

8 7 4

– 2 7 2

____________

(ix)

H T O

9 6 8

– 4 4 5

____________

(x)

H T O

6 4 6

– 2 2 2

____________

(xi)

H T O

9 9 5

– 6 3 1

____________

(xii)

H T O

8 5 7

– 4 1 5

____________

Answer:

II. (ii) 811

(iii) 725

(iv) 472

(v) 160

(vi) 321

(vii) 134

(viii) 602

(ix) 523

(x) 424

(xi) 364

(xii) 442

III. Subtract the following without Regrouping:

(i) 587 – 63

(ii) 864 – 54

(iii) 734 – 22

(iv) 468 – 105

(v) 351 – 30

(vi) 536 – 105

(vii) 227 – 106

(viii) 679 – 253

(ix) 783 – 260

(x) 975 – 342

(xi) 666 – 510

(xii) 897 – 451

(xiii) 793 – 482

(xiv) 503 – 200

(xv) 742 – 630

(xvi) 438 – 104

(xvii) 679 – 234

(xviii) 868 – 536

(xix) 568 – 122

(xx) 389 – 324

Answer:

III. (i) 524

(ii) 810

(iii) 712

(iv) 363

(v) 321

(vi) 431

(vii) 121

(viii) 426

(ix) 523

(x) 633

(xi) 156

(xii) 446

(xiii) 311

(xiv) 303

(xv) 112

(xvi) 334

(xvii) 445

(xviii) 332

(xix) 446

(xx) 65

IV. Subtract the numbers without Regrouping:

(i) 453 – 41

(ii) 536 – 12

(iii) 846 – 34

(iv) 973 – 642

(v) 128 – 128

(vi) 810 – 600

(vii) 685 – 430

(viii) 786 – 243

(ix) 498 – 303

Answer:

IV. (i) 412

(ii) 524

(iii) 812

(iv) 331

(v) 0

(vi) 210

(vii) 255

(viii) 543

(ix) 195

V. Do these sum in your notebook:

(i) 555 – 34

(ii) 286 – 50

(iii) 957 – 25

(iv) 634 – 23

(v) 473 – 31

(vi) 586 – 33

(vii) 735 – 12

(viii) 867 – 34

(ix) 268 – 117

(x) 698 – 454

(xi) 345 – 124

(xii) 758 – 631

(xiii) 368 – 256

(xiv) 579 – 254

(xv) 299 – 155

(xvi) 797 – 555

Answer:

V. (i) 521

(ii) 236

(iii) 932

(iv) 611

(v) 442

(vi) 553

(vii) 723

(viii) 833

(ix) 151

(x) 244

(xi) 221

(xii) 127

(xiii) 112

(xiv) 325

(xv) 144

(xvi) 242

FAQs on 3-Digit Subtraction without Regrouping

Answer:

Subtraction without regrouping means subtracting digits column by column without borrowing from the next place value.

Answer:

Arrange the numbers vertically according to place values and subtract ones, tens, and hundreds separately.

Answer:

Students usually learn this topic in Grade 3 and Grade 4.

Answer:

In regrouping, borrowing is needed. In subtraction without regrouping, each digit can be subtracted directly.

3rd Grade Math Lessons

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