← 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 587 · 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 363 people in the front coaches and 574 people in the back coaches. How many people are on the train?
  2. 2.? − 338 = 277
  3. 3.908 − 660 =
  4. 4.? + 757 = 900
  5. 5.? − 259 = 17
  6. 6.130 + 668 =
  7. 7.806 + 116 =
  8. 8.? − 114 = 423
  9. 9.558 − 256 =
  10. 10.? − 410 = 17
  11. 11.A school has 428 children. 422 of them are girls. How many boys are there?
  12. 12.555 − 316 =
  13. 13.A school has 697 children. 152 of them are girls. How many boys are there?
  14. 14.252 + 685 =
  15. 15.? + 672 = 946
  16. 16.? + 292 = 719
  17. 17.A train has 504 people in the front coaches and 201 people in the back coaches. How many people are on the train?
  18. 18.A train has 753 people in the front coaches and 125 people in the back coaches. How many people are on the train?
  19. 19.902 − 289 =
  20. 20.? − 132 = 77
  21. 21.? + 755 = 998
  22. 22.651 + 267 =
  23. 23.499 + 131 =
  24. 24.279 − 187 =
  25. 25.227 − 221 =
  26. 26.421 − 119 =
  27. 27.591 − 233 =
  28. 28.476 + 328 =
  29. 29.784 + 153 =
  30. 30.504 + 370 =
  31. 31.A train has 841 people in the front coaches and 152 people in the back coaches. How many people are on the train?
  32. 32.541 + ? = 830
  33. 33.? − 261 = 643
  34. 34.A train has 306 people in the front coaches and 140 people in the back coaches. How many people are on the train?
  35. 35.834 − 203 =
  36. 36.234 + 609 =
  37. 37.A train has 143 people in the front coaches and 728 people in the back coaches. How many people are on the train?
  38. 38.A train has 799 people in the front coaches and 102 people in the back coaches. How many people are on the train?
  39. 39.A train has 225 people in the front coaches and 464 people in the back coaches. How many people are on the train?
  40. 40.201 + 283 =

Answer key

  1. 937
  2. 615
  3. 248
  4. 143
  5. 276
  6. 798
  7. 922
  8. 537
  9. 302
  10. 427
  11. 6
  12. 239
  13. 545
  14. 937
  15. 274
  16. 427
  17. 705
  18. 878
  19. 613
  20. 209
  21. 243
  22. 918
  23. 630
  24. 92
  25. 6
  26. 302
  27. 358
  28. 804
  29. 937
  30. 874
  31. 993
  32. 289
  33. 904
  34. 446
  35. 631
  36. 843
  37. 871
  38. 901
  39. 689
  40. 484

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