← 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 157 · 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 321 people in the front coaches and 425 people in the back coaches. How many people are on the train?
  2. 2.300 − 230 =
  3. 3.491 + 307 =
  4. 4.848 + 102 =
  5. 5.382 − ? = 126
  6. 6.? − 220 = 131
  7. 7.290 − 125 =
  8. 8.976 − ? = 487
  9. 9.185 + ? = 838
  10. 10.A train has 751 people in the front coaches and 203 people in the back coaches. How many people are on the train?
  11. 11.A school has 819 children. 336 of them are girls. How many boys are there?
  12. 12.307 − 194 =
  13. 13.? + 793 = 940
  14. 14.297 − 121 =
  15. 15.651 − 247 =
  16. 16.A train has 416 people in the front coaches and 280 people in the back coaches. How many people are on the train?
  17. 17.656 + ? = 862
  18. 18.631 − ? = 40
  19. 19.A train has 100 people in the front coaches and 631 people in the back coaches. How many people are on the train?
  20. 20.A school has 810 children. 172 of them are girls. How many boys are there?
  21. 21.A train has 682 people in the front coaches and 282 people in the back coaches. How many people are on the train?
  22. 22.A train has 299 people in the front coaches and 123 people in the back coaches. How many people are on the train?
  23. 23.208 + ? = 920
  24. 24.627 + ? = 950
  25. 25.599 + 101 =
  26. 26.A train has 595 people in the front coaches and 357 people in the back coaches. How many people are on the train?
  27. 27.? − 437 = 160
  28. 28.A school has 394 children. 135 of them are girls. How many boys are there?
  29. 29.A school has 259 children. 165 of them are girls. How many boys are there?
  30. 30.399 + 101 =
  31. 31.963 − 520 =
  32. 32.984 − ? = 297
  33. 33.A train has 197 people in the front coaches and 791 people in the back coaches. How many people are on the train?
  34. 34.? + 196 = 309
  35. 35.876 − 105 =
  36. 36.370 + ? = 902
  37. 37.783 + ? = 955
  38. 38.A train has 539 people in the front coaches and 114 people in the back coaches. How many people are on the train?
  39. 39.337 − 271 =
  40. 40.247 − 116 =

Answer key

  1. 746
  2. 70
  3. 798
  4. 950
  5. 256
  6. 351
  7. 165
  8. 489
  9. 653
  10. 954
  11. 483
  12. 113
  13. 147
  14. 176
  15. 404
  16. 696
  17. 206
  18. 591
  19. 731
  20. 638
  21. 964
  22. 422
  23. 712
  24. 323
  25. 700
  26. 952
  27. 597
  28. 259
  29. 94
  30. 500
  31. 443
  32. 687
  33. 988
  34. 113
  35. 771
  36. 532
  37. 172
  38. 653
  39. 66
  40. 131

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