← 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 182 · 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. 1.223 − 189 =
  2. 2.A train has 870 people in the front coaches and 126 people in the back coaches. How many people are on the train?
  3. 3.A train has 471 people in the front coaches and 152 people in the back coaches. How many people are on the train?
  4. 4.A school has 797 children. 303 of them are girls. How many boys are there?
  5. 5.482 + 303 =
  6. 6.524 + 271 =
  7. 7.533 + 185 =
  8. 8.? + 190 = 655
  9. 9.387 + 517 =
  10. 10.A school has 849 children. 116 of them are girls. How many boys are there?
  11. 11.308 + 223 =
  12. 12.? + 260 = 948
  13. 13.438 − 158 =
  14. 14.882 − ? = 330
  15. 15.941 − 474 =
  16. 16.A school has 912 children. 180 of them are girls. How many boys are there?
  17. 17.? + 564 = 865
  18. 18.737 − ? = 627
  19. 19.601 + 366 =
  20. 20.541 − ? = 403
  21. 21.114 + ? = 901
  22. 22.A school has 394 children. 390 of them are girls. How many boys are there?
  23. 23.475 + 187 =
  24. 24.854 − ? = 267
  25. 25.135 + 510 =
  26. 26.? + 291 = 658
  27. 27.A school has 280 children. 211 of them are girls. How many boys are there?
  28. 28.389 − 217 =
  29. 29.A train has 853 people in the front coaches and 111 people in the back coaches. How many people are on the train?
  30. 30.265 + ? = 881
  31. 31.A school has 600 children. 215 of them are girls. How many boys are there?
  32. 32.133 + 828 =
  33. 33.800 − ? = 509
  34. 34.898 − 149 =
  35. 35.A train has 377 people in the front coaches and 599 people in the back coaches. How many people are on the train?
  36. 36.870 − 640 =
  37. 37.455 + 292 =
  38. 38.937 − 239 =
  39. 39.294 − 130 =
  40. 40.A train has 854 people in the front coaches and 126 people in the back coaches. How many people are on the train?

Answer key

  1. 34
  2. 996
  3. 623
  4. 494
  5. 785
  6. 795
  7. 718
  8. 465
  9. 904
  10. 733
  11. 531
  12. 688
  13. 280
  14. 552
  15. 467
  16. 732
  17. 301
  18. 110
  19. 967
  20. 138
  21. 787
  22. 4
  23. 662
  24. 587
  25. 645
  26. 367
  27. 69
  28. 172
  29. 964
  30. 616
  31. 385
  32. 961
  33. 291
  34. 749
  35. 976
  36. 230
  37. 747
  38. 698
  39. 164
  40. 980

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