← 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 368 · 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. 1.791 − 273 =
  2. 2.291 + ? = 486
  3. 3.734 − 220 =
  4. 4.540 − 133 =
  5. 5.284 + ? = 806
  6. 6.475 + 176 =
  7. 7.196 + 484 =
  8. 8.315 − 156 =
  9. 9.A school has 963 children. 211 of them are girls. How many boys are there?
  10. 10.669 + 244 =
  11. 11.A school has 442 children. 112 of them are girls. How many boys are there?
  12. 12.387 − ? = 150
  13. 13.A school has 387 children. 294 of them are girls. How many boys are there?
  14. 14.880 − 454 =
  15. 15.A train has 362 people in the front coaches and 561 people in the back coaches. How many people are on the train?
  16. 16.? − 172 = 56
  17. 17.894 − ? = 351
  18. 18.234 − 229 =
  19. 19.727 + 146 =
  20. 20.436 + 548 =
  21. 21.636 + 218 =
  22. 22.853 − 381 =
  23. 23.320 − 184 =
  24. 24.A train has 211 people in the front coaches and 185 people in the back coaches. How many people are on the train?
  25. 25.564 + 192 =
  26. 26.933 − ? = 231
  27. 27.A school has 336 children. 110 of them are girls. How many boys are there?
  28. 28.A train has 778 people in the front coaches and 163 people in the back coaches. How many people are on the train?
  29. 29.A school has 672 children. 576 of them are girls. How many boys are there?
  30. 30.611 + 219 =
  31. 31.848 + 115 =
  32. 32.A train has 120 people in the front coaches and 682 people in the back coaches. How many people are on the train?
  33. 33.797 − 573 =
  34. 34.? + 724 = 976
  35. 35.A school has 297 children. 268 of them are girls. How many boys are there?
  36. 36.A school has 251 children. 134 of them are girls. How many boys are there?
  37. 37.738 − 446 =
  38. 38.A train has 319 people in the front coaches and 380 people in the back coaches. How many people are on the train?
  39. 39.A school has 790 children. 178 of them are girls. How many boys are there?
  40. 40.280 + 224 =

Answer key

  1. 518
  2. 195
  3. 514
  4. 407
  5. 522
  6. 651
  7. 680
  8. 159
  9. 752
  10. 913
  11. 330
  12. 237
  13. 93
  14. 426
  15. 923
  16. 228
  17. 543
  18. 5
  19. 873
  20. 984
  21. 854
  22. 472
  23. 136
  24. 396
  25. 756
  26. 702
  27. 226
  28. 941
  29. 96
  30. 830
  31. 963
  32. 802
  33. 224
  34. 252
  35. 29
  36. 117
  37. 292
  38. 699
  39. 612
  40. 504

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