← 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 617 · 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 542 people in the front coaches and 454 people in the back coaches. How many people are on the train?
  2. 2.708 + 266 =
  3. 3.? − 334 = 197
  4. 4.664 − 293 =
  5. 5.A school has 740 children. 149 of them are girls. How many boys are there?
  6. 6.243 − 126 =
  7. 7.412 − 325 =
  8. 8.357 − 158 =
  9. 9.190 + ? = 543
  10. 10.693 − 198 =
  11. 11.225 − ? = 64
  12. 12.118 + 106 =
  13. 13.A train has 625 people in the front coaches and 162 people in the back coaches. How many people are on the train?
  14. 14.680 − 175 =
  15. 15.364 − ? = 177
  16. 16.A school has 701 children. 166 of them are girls. How many boys are there?
  17. 17.266 + ? = 652
  18. 18.309 + 266 =
  19. 19.? + 423 = 916
  20. 20.A train has 103 people in the front coaches and 309 people in the back coaches. How many people are on the train?
  21. 21.A school has 401 children. 386 of them are girls. How many boys are there?
  22. 22.A school has 543 children. 442 of them are girls. How many boys are there?
  23. 23.A school has 676 children. 244 of them are girls. How many boys are there?
  24. 24.? + 149 = 625
  25. 25.A train has 249 people in the front coaches and 654 people in the back coaches. How many people are on the train?
  26. 26.105 + 115 =
  27. 27.649 + ? = 795
  28. 28.230 + 170 =
  29. 29.A train has 783 people in the front coaches and 112 people in the back coaches. How many people are on the train?
  30. 30.A school has 329 children. 110 of them are girls. How many boys are there?
  31. 31.545 − ? = 353
  32. 32.A school has 526 children. 375 of them are girls. How many boys are there?
  33. 33.453 − ? = 241
  34. 34.758 + 109 =
  35. 35.A train has 409 people in the front coaches and 137 people in the back coaches. How many people are on the train?
  36. 36.831 + 151 =
  37. 37.783 − 647 =
  38. 38.535 + 124 =
  39. 39.449 − ? = 9
  40. 40.A school has 389 children. 125 of them are girls. How many boys are there?

Answer key

  1. 996
  2. 974
  3. 531
  4. 371
  5. 591
  6. 117
  7. 87
  8. 199
  9. 353
  10. 495
  11. 161
  12. 224
  13. 787
  14. 505
  15. 187
  16. 535
  17. 386
  18. 575
  19. 493
  20. 412
  21. 15
  22. 101
  23. 432
  24. 476
  25. 903
  26. 220
  27. 146
  28. 400
  29. 895
  30. 219
  31. 192
  32. 151
  33. 212
  34. 867
  35. 546
  36. 982
  37. 136
  38. 659
  39. 440
  40. 264

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