3rd Grade Addition Worksheet | Printable 3-Digit Addition Practice

This 3^rd Grade Addition Worksheet provides practice with adding 3-digit and 4-digit numbers, with and without regrouping. Students will practice addition properties, estimating sums, number addition, and addition word problems. These printable-style exercises are designed to help 3^rd grade students build accuracy, strengthen place-value skills, and solve real-world addition problems.

3rd Grade Addition Practice

Practice adding numbers up to four digits with these 3rd grade addition exercises. Students will work on addition with and without regrouping, estimate sums, and solve addition problems to build accuracy and confidence.

Addition Without Regrouping

Practice adding 2-digit and 3-digit numbers without regrouping. These problems help 3rd grade students strengthen their place-value skills and improve addition accuracy.

Solve the following addition problems without regrouping. Add the ones, tens, and hundreds carefully.

1.  
124
+ 235 = ______

2.  
312
+ 146 = ______

3.  
421
+ 158 = ______

4.  
203
+ 145 = ______

5.  
536
+ 142 = ______

6.  
251
+ 327 = ______

7.  
143
+ 526 = ______

8.  
362
+ 214 = ______

9.  
415
+ 263 = ______

10. 132
+ 456 = ______

11. 524
+ 135 = ______

12. 241
+ 328 = ______

13. 613
+ 124 = ______

14. 352
+ 416 = ______

15. 225
+ 364 = ______

Answers: 

1. 359

2. 458

3.  579

4.  
348

5.  678

6.  
578

7. 669

8.  
576

9.  
678

10. 588

11. 659

12. 569

13. 737

14. 768

15. 589

Addition With Regrouping

Practice adding 2-digit and 3-digit numbers with regrouping. These 3rd grade addition problems help students learn how to carry to the next place-value column when the sum is 10 or more.

Solve the following addition problems. Remember to regroup when the sum in a place-value column is 10 or more.

1. 247 + 185 = ______

2. 368 + 257 = ______

3. 459 + 276 = ______

4. 584 + 169 = ______

5. 327 + 486 = ______

6. 675 + 248 = ______

7. 738 + 195 = ______

8. 456 + 378 = ______

9. 629 + 184 = ______

10. 785 + 167 = ______

11. 346 + 589 = ______

12. 567 + 286 = ______

13. 475 + 368 = ______

14. 698 + 257 = ______

15. 856 + 179 = ______

Answers

1. 247 + 185 = 432

2. 368 + 257 = 625

3. 459 + 276 = 735

4. 584 + 169 = 753

5. 327 + 486 = 813

6. 675 + 248 = 923

7. 738 + 195 = 933

8. 456 + 378 = 834

9. 629 + 184 = 813

10. 785 + 167 = 952

11. 346 + 589 = 935

12. 567 + 286 = 853

13. 475 + 368 = 843

14. 698 + 257 = 955

15. 856 + 179 = 1,035

How to use this worksheet

1. Start with the basic addition problems.
2. Practice addition with and without regrouping.
3. Review the properties of addition.
4. Solve the word problems carefully.
5. Check your work using the answer key.

1. 600 + 100 = ……………… 

2. 111 + 222 = ……………… 

3. 416 + 532 = ……………… + 416

4. 304 + ……………… = 408 + 304

5. 347 + 0 = ………………

6. 247 + (123 + 51) = (……………… + 123) + 51

7. Successor of 299 is ………………

8. Predecessor of 301 is ………………

9. There are 200 brown rabbits and 50 white rabbits. How
many total rabbits are there in the jungle?

10. When zero is added to a number, the sum is ………………

11. There were 243 blue birds and 145 black birds in the
park. How many birds are there in the park?

12. Write the numerals and then add:

(i) Seven hundred fifty-five and one hundred sixty-six

(ii) Five hundred eighty, two hundred forty-four and one
hundred seventeen

(iii) Two hundred twenty-five and one hundred ninety-seven

(iv) Three hundred sixteen, two hundred twenty-eight and two
hundred forty-one

13. Add the following numbers:

(i) 267 + 32

(ii) 193 + 578

(iii) 245 + 500

(iv) 241 + 261

(v) 403 + 89

(vi) 298 + 567 + 132

14. Add the following:

(i) 198 + 461 + 100

(ii) 213 + 167 + 533

(iii) 521 + 124 + 104

(iv) 492 + 273 + 163

(v) 605 + 154 + 212

(vi) 226 + 30 + 135

(vii) 606 + 150 + 102

(viii) 156 + 203 + 411

15. Solve the following word problems:

(i) 233 people attended a meeting in State A and 746 people attended meeting in State B. How many people in total attended the meeting?

(ii) A Builder took 369 days to complete Building A, 213 days to complete Building B and 367 days to complete Building C. How many days did the builder take to complete all three buildings?

(iii) In a garden, there are 416 green grapes on a grapevine, 209 apples on an apple tree and 327 mangoes on a mango tree. Calculate total number of fruits in the garden.

(iv) 273 boys took part in the Parade. 100 girls more than the boys took part in the parade. How many total number of children participated in the parade?

(v) 358 cold drink bottles were loaded on a truck. 603 more bottles were loaded next day. How many bottles were loaded in all?

(vi) Jane is reading a book. If she is on 287 page number and she has to read 154 pages more. How many pages are there in the book?

(vii) A cloth store sold 578 shirts and 397 trousers in the month of October. How many clothes were sold in all?

16. Solve the following word problems on addition of 4-digit numbers:

(i) There
are 2576 boys and 1894 girls studying in a school. What is the total number of students
in the school?

(ii) In a
city there are 3236 cars, 1327 scooters and 4218 bikes. How many vehicles are there in the city?

(iii) A
poultry farm produced 1239, 2378, 1156 eggs in three days consecutively. How
many eggs altogether are produced in these days?

(iv) Mr. John
bought portable T.V. set for $3845, washing machine for $2738 and transistor
for $847. How much did he pay in all?

(v) In a
school library, there are 1968 books on English, 1735 books on Mathematics 876
books on science and 2056 story books. How many books are there in the library?

(vi) In a
garden, there are 1863 apple trees, 1077 mango trees, 978 guava trees and 169
orange trees. How many trees are there in the garden?

17. There is a letter for each addition problems. Write the letter in the box matching that to the answer of general knowledge questions.

18. 

19. Can you add the numbers on the left? Each addition is associated with an animal on the left and the sum with its young ones on the right.

Answer:

1. 700

2. 333

3. 532

4. 408

5. 347

6. 247

7. 300

8. 300

9. 250

10. number itself

11. 388

12. (i) 921

(ii) 941

(iii) 422

(iv) 793

13. (i) 299

(ii) 771

(iii) 745

(iv) 502

(v) 492

(vi) 997

14. (i) 759

(ii) 973

(iii) 749

(iv) 928

(v) 971

(vi) 391

(vii) 858

(viii) 770

15. (i) 979

(ii) 949

(iii) 952

(iv) 646

(v) 961

(vi) 441

(vii) 975

16. (i) 4470

(ii) 8781

(iii) 4773

(iv) $ 7430

(v) 6635

(vi) 4087

17. Capital of India – NEW DELHI

      National river of India – GANGA

      National animal of India – TIGER

18.

(a) → (ii)

(b) → (i)

(c) → (iv)

(d) → (v)

(e) → (iii)

19. (i) → (h)

(ii) → (f)

(iii) → (g)

(iv) → (j)

(v) → (c)

(vi) → (d)

(vii) → (i)

(viii) → (a)

(ix) → (e)

(x) → (b)

Frequently Asked Questions About 3rd Grade Addition:

About Author

Written by Priyanka Ghosh
Mathematics Educator | Founder of Math Only Math

Priyanka Ghosh has been teaching elementary and middle-school mathematics for over 12 years and specializes in creating simple, child-friendly math lessons and worksheets.

3rd Grade Math Lessons

From 3rd Grade Addition Worksheet to HOE PAGE