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Class 3 · Maths · 2026-27

Class 3 Maths Addition and Subtraction Worksheet with Answers

Column addition and subtraction with regrouping - the topic where a shaky grip on place value stops being invisible. The worked examples here use place-value language rather than 'carry the one', because that is how NCERT's Maths Mela teaches it and because a child who knows what they are carrying makes far fewer errors than one following a ritual.

46 questions · 30 minutes · full answer key · free printable PDF · no sign-up

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Class 3 Maths Addition and Subtraction Worksheet

Class 3 Maths · Addition and subtraction with regrouping · 46 questions with answers

Download PDF - Class 3 Maths Addition and Subtraction Worksheet, with the answer key on the last page

Column addition and subtraction with regrouping - the topic where a shaky grip on place value stops being invisible. The worked examples here use place-value language rather than 'carry the one', because that is how NCERT's Maths Mela teaches it and because a child who knows what they are carrying makes far fewer errors than one following a ritual.

  • Add two three-digit numbers with regrouping.
  • Subtract three-digit numbers with borrowing, including across a zero.
  • Solve a one-step word problem and say whether it needs adding or subtracting.

Exercise 1 of 4 · 12 questions

Add.

Write the answer · Warm-up

Here’s one done for you

246 + 137: ones first, 6 + 7 = 13. That is 1 ten and 3 ones - write the 3, and carry the TEN into the tens column. Then 4 + 3 + 1 = 8 tens. Then 2 + 1 = 3 hundreds. Answer 383. Say 'carry one ten', not 'carry the one' - it is what makes the method make sense.

  1. 1)246 + 137
  2. 2)358 + 225
  3. 3)417 + 296
  4. 4)584 + 168
  5. 5)329 + 471
  6. 6)663 + 259
  7. 7)411 + 214
  8. 8)448 + 470
  9. 9)270 + 174
  10. 10)520 + 185
  11. 11)433 + 435
  12. 12)275 + 396

Answers

  1. 1) 383
  2. 2) 583
  3. 3) 713
  4. 4) 752
  5. 5) 800
  6. 6) 922
  7. 7) 625
  8. 8) 918
  9. 9) 444
  10. 10) 705
  11. 11) 868
  12. 12) 671

Exercise 2 of 4 · 12 questions

Subtract.

Write the answer · Guided

Here’s one done for you

452 - 138: ones first, 2 - 8 cannot be done, so borrow. Take one ten from the 5 tens, leaving 4 tens, and add it to the ones: 12 - 8 = 4. Then 4 - 3 = 1 ten. Then 4 - 1 = 3 hundreds. Answer 314. Borrowing across a zero (700 - 246) is the hard case - borrow from the hundreds first, then the tens.

  1. 1)452 - 138
  2. 2)634 - 287
  3. 3)700 - 246
  4. 4)815 - 429
  5. 5)506 - 178
  6. 6)920 - 355
  7. 7)561 - 157
  8. 8)496 - 360
  9. 9)666 - 173
  10. 10)575 - 184
  11. 11)734 - 355
  12. 12)482 - 427

Answers

  1. 1) 314
  2. 2) 347
  3. 3) 454
  4. 4) 386
  5. 5) 328
  6. 6) 565
  7. 7) 404
  8. 8) 136
  9. 9) 493
  10. 10) 391
  11. 11) 379
  12. 12) 55

Exercise 3 of 4 · 12 questions

Find the missing number.

Fill in the blank · Practice

Here’s one done for you

245 + ___ = 400 → 155. Turn it round: if 245 plus something makes 400, then 400 - 245 gives the something. A missing-addend question is a subtraction in disguise.

  1. 1)245 + ___ = 400
  2. 2)___ + 172 = 500
  3. 3)630 - ___ = 245
  4. 4)___ - 218 = 340
  5. 5)512 + ___ = 750
  6. 6)___ + 294 = 700
  7. 7)875 - ___ = 450
  8. 8)___ - 345 = 345
  9. 9)163 + ___ = 400
  10. 10)___ + 316 = 600
  11. 11)720 - ___ = 265
  12. 12)___ - 548 = 355

Answers

  1. 1) 155
  2. 2) 328
  3. 3) 385
  4. 4) 558
  5. 5) 238
  6. 6) 406
  7. 7) 425
  8. 8) 690
  9. 9) 237
  10. 10) 284
  11. 11) 455
  12. 12) 903

Exercise 4 of 4 · 10 questions

Word problems. Write the sum you used and the answer.

Write the answer · Challenge

Here’s one done for you

'In all', 'altogether' and 'bought more' usually mean add. 'Left', 'still to', 'sold' and 'how many more' usually mean subtract. Read the question twice and decide which it is BEFORE writing any numbers - most word-problem mistakes are choosing the wrong operation, not calculating wrongly.

  1. 1)A school has 348 boys and 276 girls. How many children in all?
  2. 2)A shopkeeper had 500 eggs and sold 237. How many are left?
  3. 3)Ravi read 128 pages of a 350-page book. How many pages are still to read?
  4. 4)A library had 465 books and bought 189 more. How many books now?
  5. 5)A bus carried 236 passengers in the morning and 487 in the evening. How many in all?
  6. 6)A farmer had 814 mangoes and 359 were sold. How many are left?
  7. 7)A cricket ground had 175 people, then 268 more came in. How many people now?
  8. 8)A tank holds 600 litres. 247 litres were used. How much is left?
  9. 9)A school planted 392 saplings last year and 208 this year. How many altogether?
  10. 10)A shop had 745 notebooks and sold 386. How many are left?

Answers

  1. 1) 348 + 276 = 624 children
  2. 2) 500 - 237 = 263 eggs
  3. 3) 350 - 128 = 222 pages
  4. 4) 465 + 189 = 654 books
  5. 5) 236 + 487 = 723 passengers
  6. 6) 814 - 359 = 455 mangoes
  7. 7) 175 + 268 = 443 people
  8. 8) 600 - 247 = 353 litres
  9. 9) 392 + 208 = 600 saplings
  10. 10) 745 - 386 = 359 notebooks

While your child works

  • Say 'carry one ten' rather than 'carry the one'. It takes one extra word and it is the difference between a child who understands regrouping and one performing a ritual they cannot check.
  • Subtraction across a zero (700 - 246) is the hardest case on this sheet by some distance. If everything else is fine and those go wrong, that is the specific thing to practise rather than the whole topic.
  • For word problems, have your child say whether it is an adding or a subtracting question before touching the numbers. Most errors here are choosing wrong, not calculating wrong.
Before you print it

What is on this worksheet

4 exercises, 46 questions, about 30 minutes. Every exercise has an answer key, printed on its own page so it can be kept back. 4 exercises start with a question already worked out, so you can check the method before helping.

ExerciseWhat the child doesQuestionsWorked example
1Written answers12Yes
2Written answers12Yes
3Fill in the blanks12Yes
4Written answers10Yes

The same topic at other levels

Most of these topics are taught over several years rather than in one. If this sheet is too hard or too easy, the same idea at another level is usually the fix.

More Class 3 Maths worksheets

Each one is a complete sheet with its own answer key, free to print.

Questions parents ask

About this worksheet

Should I teach 'carry the one' or something else?

Say 'carry one ten'. When 6 + 7 = 13, what moves into the next column is one ten, not an abstract one. NCERT's Maths Mela teaches it with place-value language for that reason, and children who know what they are carrying can check their own work.

My child gets subtraction across a zero wrong. What do I do?

Practise that case specifically - 700 - 246 and similar - rather than repeating the whole topic. You borrow from the hundreds first, turning 7 hundreds into 6 hundreds and 10 tens, then borrow one of those tens for the ones column. It is a two-step borrow and it is the hardest thing on this sheet.

Are the answers included?

Yes, with the working shown for the word problems rather than just the final number, so you can see where an answer went wrong rather than only that it did.

Does this Class 3 Maths worksheet come with answers?

Yes. Every exercise has a full answer key, and it prints on its own page at the end rather than beside the questions - so you can hand your child the sheet and keep the answers back. Some exercises also show one question already worked out, with the method rather than just the result, which is the part most answer keys leave out.

Is there a free printable PDF?

Yes, and there is no sign-up, no email and no account. The download button at the top of the sheet gives you the whole thing - all 46 questions across 4 exercises, plus the answer key - laid out to print on A4.

How long does this worksheet take?

About 30 minutes for 46 questions, though that is a guide rather than a target. It is designed to be split: the exercises are ordered so stopping halfway still leaves a complete piece of work, which matters more than finishing at this age.

Can I use it if my child is in a different class?

Often, yes - these topics are taught across several years and schools vary in when they arrive. Judge by the questions rather than the class on the label. If the first exercise is a struggle the level below is the better start, and the same topic at other levels is linked further up this page.

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