← 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 912 · 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. 1.748 − 391 =
  2. 2.912 − ? = 184
  3. 3.A train has 694 people in the front coaches and 219 people in the back coaches. How many people are on the train?
  4. 4.590 − 476 =
  5. 5.748 + ? = 864
  6. 6.724 + 117 =
  7. 7.728 − 226 =
  8. 8.? − 188 = 64
  9. 9.526 − 247 =
  10. 10.588 − ? = 40
  11. 11.A train has 892 people in the front coaches and 102 people in the back coaches. How many people are on the train?
  12. 12.287 − ? = 154
  13. 13.? + 887 = 993
  14. 14.996 − 504 =
  15. 15.799 − 378 =
  16. 16.A school has 220 children. 124 of them are girls. How many boys are there?
  17. 17.742 − ? = 591
  18. 18.317 − 181 =
  19. 19.? + 269 = 787
  20. 20.A train has 226 people in the front coaches and 314 people in the back coaches. How many people are on the train?
  21. 21.A train has 207 people in the front coaches and 579 people in the back coaches. How many people are on the train?
  22. 22.575 − ? = 367
  23. 23.583 + 205 =
  24. 24.485 − ? = 241
  25. 25.665 − ? = 123
  26. 26.A train has 216 people in the front coaches and 227 people in the back coaches. How many people are on the train?
  27. 27.A train has 529 people in the front coaches and 427 people in the back coaches. How many people are on the train?
  28. 28.287 + 683 =
  29. 29.? + 304 = 418
  30. 30.A train has 483 people in the front coaches and 276 people in the back coaches. How many people are on the train?
  31. 31.332 + 334 =
  32. 32.100 + 833 =
  33. 33.175 + 684 =
  34. 34.552 + 101 =
  35. 35.397 + 458 =
  36. 36.683 + ? = 892
  37. 37.? + 329 = 634
  38. 38.A train has 433 people in the front coaches and 301 people in the back coaches. How many people are on the train?
  39. 39.A train has 261 people in the front coaches and 416 people in the back coaches. How many people are on the train?
  40. 40.A school has 935 children. 388 of them are girls. How many boys are there?

Answer key

  1. 357
  2. 728
  3. 913
  4. 114
  5. 116
  6. 841
  7. 502
  8. 252
  9. 279
  10. 548
  11. 994
  12. 133
  13. 106
  14. 492
  15. 421
  16. 96
  17. 151
  18. 136
  19. 518
  20. 540
  21. 786
  22. 208
  23. 788
  24. 244
  25. 542
  26. 443
  27. 956
  28. 970
  29. 114
  30. 759
  31. 666
  32. 933
  33. 859
  34. 653
  35. 855
  36. 209
  37. 305
  38. 734
  39. 677
  40. 547

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