← 3-digit addition and subtraction lesson New set →

Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 917 · 40 sums
TalentJR

The method (Column by column): Line up ones, tens and hundreds. Add from the right; 10 or more → carry 1 to the next column. Subtract from the right; top digit smaller → borrow 1 from the next column. Missing number in an addition = total − the number you know.

NameDateTime takenScore ___ / 40
  1. 1.A train has 357 people in the front coaches and 307 people in the back coaches. How many people are on the train?
  2. 2.876 − 233 =
  3. 3.763 + 227 =
  4. 4.? − 188 = 279
  5. 5.A school has 523 children. 452 of them are girls. How many boys are there?
  6. 6.638 + 142 =
  7. 7.310 − 107 =
  8. 8.? + 614 = 715
  9. 9.485 + 309 =
  10. 10.392 − ? = 198
  11. 11.A train has 453 people in the front coaches and 448 people in the back coaches. How many people are on the train?
  12. 12.471 − 211 =
  13. 13.524 + 292 =
  14. 14.522 − ? = 379
  15. 15.A school has 926 children. 610 of them are girls. How many boys are there?
  16. 16.552 + 226 =
  17. 17.? − 427 = 356
  18. 18.A school has 624 children. 121 of them are girls. How many boys are there?
  19. 19.814 − 548 =
  20. 20.? + 100 = 940
  21. 21.A train has 419 people in the front coaches and 242 people in the back coaches. How many people are on the train?
  22. 22.A school has 610 children. 148 of them are girls. How many boys are there?
  23. 23.A train has 648 people in the front coaches and 134 people in the back coaches. How many people are on the train?
  24. 24.? + 166 = 366
  25. 25.895 − 365 =
  26. 26.350 + 321 =
  27. 27.? + 209 = 639
  28. 28.A train has 154 people in the front coaches and 489 people in the back coaches. How many people are on the train?
  29. 29.A train has 169 people in the front coaches and 641 people in the back coaches. How many people are on the train?
  30. 30.? + 659 = 769
  31. 31.? + 503 = 951
  32. 32.512 − 406 =
  33. 33.A train has 609 people in the front coaches and 355 people in the back coaches. How many people are on the train?
  34. 34.601 + 144 =
  35. 35.410 − 293 =
  36. 36.739 − 627 =
  37. 37.? + 702 = 906
  38. 38.964 − ? = 649
  39. 39.A train has 463 people in the front coaches and 308 people in the back coaches. How many people are on the train?
  40. 40.A train has 301 people in the front coaches and 386 people in the back coaches. How many people are on the train?

Answer key

  1. 664
  2. 643
  3. 990
  4. 467
  5. 71
  6. 780
  7. 203
  8. 101
  9. 794
  10. 194
  11. 901
  12. 260
  13. 816
  14. 143
  15. 316
  16. 778
  17. 783
  18. 503
  19. 266
  20. 840
  21. 661
  22. 462
  23. 782
  24. 200
  25. 530
  26. 671
  27. 430
  28. 643
  29. 810
  30. 110
  31. 448
  32. 106
  33. 964
  34. 745
  35. 117
  36. 112
  37. 204
  38. 315
  39. 771
  40. 687

Free maths worksheets lessons, practice and worksheets at talentjr.in/maths-worksheets