← 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 604 · 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 492 people in the front coaches and 474 people in the back coaches. How many people are on the train?
  2. 2.A train has 363 people in the front coaches and 267 people in the back coaches. How many people are on the train?
  3. 3.828 − ? = 627
  4. 4.? − 243 = 25
  5. 5.760 − 129 =
  6. 6.A school has 456 children. 257 of them are girls. How many boys are there?
  7. 7.382 − 375 =
  8. 8.492 + ? = 598
  9. 9.A school has 721 children. 540 of them are girls. How many boys are there?
  10. 10.? − 698 = 9
  11. 11.614 + 299 =
  12. 12.A train has 260 people in the front coaches and 592 people in the back coaches. How many people are on the train?
  13. 13.A school has 382 children. 361 of them are girls. How many boys are there?
  14. 14.A train has 244 people in the front coaches and 105 people in the back coaches. How many people are on the train?
  15. 15.233 + 129 =
  16. 16.395 − 150 =
  17. 17.A train has 266 people in the front coaches and 120 people in the back coaches. How many people are on the train?
  18. 18.696 − ? = 525
  19. 19.767 − 600 =
  20. 20.? − 582 = 194
  21. 21.886 − 848 =
  22. 22.804 + 185 =
  23. 23.939 − ? = 255
  24. 24.333 − 235 =
  25. 25.? + 669 = 825
  26. 26.? − 349 = 379
  27. 27.? − 610 = 108
  28. 28.? − 216 = 122
  29. 29.A train has 667 people in the front coaches and 312 people in the back coaches. How many people are on the train?
  30. 30.550 + ? = 730
  31. 31.292 − ? = 110
  32. 32.773 − ? = 212
  33. 33.A school has 290 children. 226 of them are girls. How many boys are there?
  34. 34.405 + 440 =
  35. 35.A train has 538 people in the front coaches and 213 people in the back coaches. How many people are on the train?
  36. 36.A school has 295 children. 145 of them are girls. How many boys are there?
  37. 37.350 + ? = 892
  38. 38.220 + 598 =
  39. 39.? − 215 = 116
  40. 40.A train has 779 people in the front coaches and 116 people in the back coaches. How many people are on the train?

Answer key

  1. 966
  2. 630
  3. 201
  4. 268
  5. 631
  6. 199
  7. 7
  8. 106
  9. 181
  10. 707
  11. 913
  12. 852
  13. 21
  14. 349
  15. 362
  16. 245
  17. 386
  18. 171
  19. 167
  20. 776
  21. 38
  22. 989
  23. 684
  24. 98
  25. 156
  26. 728
  27. 718
  28. 338
  29. 979
  30. 180
  31. 182
  32. 561
  33. 64
  34. 845
  35. 751
  36. 150
  37. 542
  38. 818
  39. 331
  40. 895

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