← 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 664 · 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. 1.267 − ? = 154
  2. 2.A train has 209 people in the front coaches and 151 people in the back coaches. How many people are on the train?
  3. 3.A school has 921 children. 435 of them are girls. How many boys are there?
  4. 4.A school has 832 children. 286 of them are girls. How many boys are there?
  5. 5.587 − ? = 60
  6. 6.558 + 391 =
  7. 7.931 − 788 =
  8. 8.396 − ? = 94
  9. 9.A train has 113 people in the front coaches and 782 people in the back coaches. How many people are on the train?
  10. 10.538 − 403 =
  11. 11.256 + ? = 902
  12. 12.? − 496 = 127
  13. 13.? − 181 = 34
  14. 14.A train has 148 people in the front coaches and 785 people in the back coaches. How many people are on the train?
  15. 15.? − 585 = 248
  16. 16.A school has 802 children. 715 of them are girls. How many boys are there?
  17. 17.727 − 191 =
  18. 18.? + 506 = 989
  19. 19.328 + 589 =
  20. 20.A train has 627 people in the front coaches and 337 people in the back coaches. How many people are on the train?
  21. 21.? − 292 = 666
  22. 22.274 − 139 =
  23. 23.391 + 242 =
  24. 24.245 − 126 =
  25. 25.995 − ? = 34
  26. 26.883 − ? = 698
  27. 27.694 + ? = 807
  28. 28.556 − ? = 121
  29. 29.775 − 531 =
  30. 30.A train has 398 people in the front coaches and 386 people in the back coaches. How many people are on the train?
  31. 31.A train has 134 people in the front coaches and 243 people in the back coaches. How many people are on the train?
  32. 32.A train has 168 people in the front coaches and 460 people in the back coaches. How many people are on the train?
  33. 33.A school has 775 children. 300 of them are girls. How many boys are there?
  34. 34.674 − 621 =
  35. 35.? − 272 = 39
  36. 36.A school has 850 children. 479 of them are girls. How many boys are there?
  37. 37.? + 371 = 809
  38. 38.A school has 336 children. 118 of them are girls. How many boys are there?
  39. 39.A school has 284 children. 142 of them are girls. How many boys are there?
  40. 40.? + 114 = 947

Answer key

  1. 113
  2. 360
  3. 486
  4. 546
  5. 527
  6. 949
  7. 143
  8. 302
  9. 895
  10. 135
  11. 646
  12. 623
  13. 215
  14. 933
  15. 833
  16. 87
  17. 536
  18. 483
  19. 917
  20. 964
  21. 958
  22. 135
  23. 633
  24. 119
  25. 961
  26. 185
  27. 113
  28. 435
  29. 244
  30. 784
  31. 377
  32. 628
  33. 475
  34. 53
  35. 311
  36. 371
  37. 438
  38. 218
  39. 142
  40. 833

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