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Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 562 · 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 105 people in the front coaches and 290 people in the back coaches. How many people are on the train?
  2. 2.660 + 221 =
  3. 3.650 − ? = 262
  4. 4.228 + 680 =
  5. 5.A school has 553 children. 151 of them are girls. How many boys are there?
  6. 6.A school has 294 children. 239 of them are girls. How many boys are there?
  7. 7.531 + 316 =
  8. 8.225 − 188 =
  9. 9.A train has 240 people in the front coaches and 251 people in the back coaches. How many people are on the train?
  10. 10.296 + 464 =
  11. 11.266 − 107 =
  12. 12.742 − 441 =
  13. 13.A train has 736 people in the front coaches and 243 people in the back coaches. How many people are on the train?
  14. 14.485 − ? = 319
  15. 15.? + 743 = 854
  16. 16.A school has 313 children. 129 of them are girls. How many boys are there?
  17. 17.A train has 876 people in the front coaches and 108 people in the back coaches. How many people are on the train?
  18. 18.A school has 462 children. 121 of them are girls. How many boys are there?
  19. 19.A school has 370 children. 144 of them are girls. How many boys are there?
  20. 20.416 − 401 =
  21. 21.251 − ? = 74
  22. 22.428 − 394 =
  23. 23.? − 318 = 9
  24. 24.223 − 134 =
  25. 25.690 − ? = 235
  26. 26.A train has 829 people in the front coaches and 118 people in the back coaches. How many people are on the train?
  27. 27.823 − 593 =
  28. 28.? − 151 = 814
  29. 29.227 − ? = 124
  30. 30.576 − 284 =
  31. 31.A school has 960 children. 196 of them are girls. How many boys are there?
  32. 32.137 + ? = 469
  33. 33.A train has 299 people in the front coaches and 232 people in the back coaches. How many people are on the train?
  34. 34.332 − 208 =
  35. 35.A school has 255 children. 146 of them are girls. How many boys are there?
  36. 36.A school has 525 children. 281 of them are girls. How many boys are there?
  37. 37.A train has 654 people in the front coaches and 286 people in the back coaches. How many people are on the train?
  38. 38.? − 781 = 162
  39. 39.775 + 174 =
  40. 40.733 − 467 =

Answer key

  1. 395
  2. 881
  3. 388
  4. 908
  5. 402
  6. 55
  7. 847
  8. 37
  9. 491
  10. 760
  11. 159
  12. 301
  13. 979
  14. 166
  15. 111
  16. 184
  17. 984
  18. 341
  19. 226
  20. 15
  21. 177
  22. 34
  23. 327
  24. 89
  25. 455
  26. 947
  27. 230
  28. 965
  29. 103
  30. 292
  31. 764
  32. 332
  33. 531
  34. 124
  35. 109
  36. 244
  37. 940
  38. 943
  39. 949
  40. 266

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