← 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 564 · 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. 1.872 + ? = 980
  2. 2.A school has 282 children. 227 of them are girls. How many boys are there?
  3. 3.A school has 878 children. 437 of them are girls. How many boys are there?
  4. 4.104 + 397 =
  5. 5.163 + 456 =
  6. 6.604 − 193 =
  7. 7.A school has 990 children. 654 of them are girls. How many boys are there?
  8. 8.539 − ? = 44
  9. 9.695 − 247 =
  10. 10.657 + ? = 980
  11. 11.431 − 407 =
  12. 12.A school has 758 children. 304 of them are girls. How many boys are there?
  13. 13.A train has 389 people in the front coaches and 448 people in the back coaches. How many people are on the train?
  14. 14.653 − 102 =
  15. 15.A train has 348 people in the front coaches and 286 people in the back coaches. How many people are on the train?
  16. 16.? − 149 = 779
  17. 17.660 + 120 =
  18. 18.A train has 297 people in the front coaches and 643 people in the back coaches. How many people are on the train?
  19. 19.401 + 584 =
  20. 20.811 + 113 =
  21. 21.A school has 855 children. 237 of them are girls. How many boys are there?
  22. 22.A train has 227 people in the front coaches and 133 people in the back coaches. How many people are on the train?
  23. 23.A school has 631 children. 105 of them are girls. How many boys are there?
  24. 24.698 − ? = 2
  25. 25.A train has 392 people in the front coaches and 223 people in the back coaches. How many people are on the train?
  26. 26.A school has 474 children. 442 of them are girls. How many boys are there?
  27. 27.A train has 535 people in the front coaches and 252 people in the back coaches. How many people are on the train?
  28. 28.A train has 294 people in the front coaches and 516 people in the back coaches. How many people are on the train?
  29. 29.518 + ? = 886
  30. 30.A school has 691 children. 320 of them are girls. How many boys are there?
  31. 31.A school has 634 children. 419 of them are girls. How many boys are there?
  32. 32.228 + ? = 376
  33. 33.214 + 517 =
  34. 34.? + 736 = 944
  35. 35.? + 859 = 969
  36. 36.816 + ? = 937
  37. 37.422 − 134 =
  38. 38.352 − ? = 119
  39. 39.390 − 180 =
  40. 40.589 + 169 =

Answer key

  1. 108
  2. 55
  3. 441
  4. 501
  5. 619
  6. 411
  7. 336
  8. 495
  9. 448
  10. 323
  11. 24
  12. 454
  13. 837
  14. 551
  15. 634
  16. 928
  17. 780
  18. 940
  19. 985
  20. 924
  21. 618
  22. 360
  23. 526
  24. 696
  25. 615
  26. 32
  27. 787
  28. 810
  29. 368
  30. 371
  31. 215
  32. 148
  33. 731
  34. 208
  35. 110
  36. 121
  37. 288
  38. 233
  39. 210
  40. 758

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