← 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 134 · 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 school has 463 children. 458 of them are girls. How many boys are there?
  2. 2.263 + 111 =
  3. 3.769 + 189 =
  4. 4.232 − 112 =
  5. 5.193 + ? = 611
  6. 6.614 − 353 =
  7. 7.365 + 348 =
  8. 8.596 + 291 =
  9. 9.? − 353 = 518
  10. 10.A train has 707 people in the front coaches and 275 people in the back coaches. How many people are on the train?
  11. 11.540 + 393 =
  12. 12.700 − 651 =
  13. 13.124 + 508 =
  14. 14.A school has 979 children. 486 of them are girls. How many boys are there?
  15. 15.A train has 474 people in the front coaches and 146 people in the back coaches. How many people are on the train?
  16. 16.775 − ? = 313
  17. 17.789 + 114 =
  18. 18.A train has 591 people in the front coaches and 273 people in the back coaches. How many people are on the train?
  19. 19.A train has 582 people in the front coaches and 384 people in the back coaches. How many people are on the train?
  20. 20.387 + 560 =
  21. 21.? + 252 = 661
  22. 22.? + 599 = 817
  23. 23.692 − 340 =
  24. 24.721 + 150 =
  25. 25.A train has 853 people in the front coaches and 129 people in the back coaches. How many people are on the train?
  26. 26.325 + 554 =
  27. 27.883 − 232 =
  28. 28.846 − 465 =
  29. 29.429 − 275 =
  30. 30.812 − 167 =
  31. 31.? − 219 = 543
  32. 32.A school has 571 children. 385 of them are girls. How many boys are there?
  33. 33.891 + 103 =
  34. 34.? − 521 = 69
  35. 35.792 + 124 =
  36. 36.248 + 185 =
  37. 37.? − 328 = 116
  38. 38.A school has 859 children. 416 of them are girls. How many boys are there?
  39. 39.419 − 298 =
  40. 40.A train has 319 people in the front coaches and 166 people in the back coaches. How many people are on the train?

Answer key

  1. 5
  2. 374
  3. 958
  4. 120
  5. 418
  6. 261
  7. 713
  8. 887
  9. 871
  10. 982
  11. 933
  12. 49
  13. 632
  14. 493
  15. 620
  16. 462
  17. 903
  18. 864
  19. 966
  20. 947
  21. 409
  22. 218
  23. 352
  24. 871
  25. 982
  26. 879
  27. 651
  28. 381
  29. 154
  30. 645
  31. 762
  32. 186
  33. 994
  34. 590
  35. 916
  36. 433
  37. 444
  38. 443
  39. 121
  40. 485

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