← 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 325 · 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. 1.330 − 158 =
  2. 2.280 + 538 =
  3. 3.A train has 800 people in the front coaches and 145 people in the back coaches. How many people are on the train?
  4. 4.295 + 692 =
  5. 5.? + 650 = 753
  6. 6.401 + 407 =
  7. 7.201 − ? = 27
  8. 8.831 − ? = 272
  9. 9.A school has 681 children. 267 of them are girls. How many boys are there?
  10. 10.A school has 578 children. 142 of them are girls. How many boys are there?
  11. 11.A school has 665 children. 253 of them are girls. How many boys are there?
  12. 12.? − 207 = 554
  13. 13.531 − ? = 49
  14. 14.204 − 170 =
  15. 15.A train has 563 people in the front coaches and 431 people in the back coaches. How many people are on the train?
  16. 16.201 − 192 =
  17. 17.A train has 788 people in the front coaches and 113 people in the back coaches. How many people are on the train?
  18. 18.? + 198 = 351
  19. 19.A school has 297 children. 146 of them are girls. How many boys are there?
  20. 20.769 − 698 =
  21. 21.A train has 895 people in the front coaches and 100 people in the back coaches. How many people are on the train?
  22. 22.A train has 388 people in the front coaches and 465 people in the back coaches. How many people are on the train?
  23. 23.828 − ? = 514
  24. 24.? + 594 = 702
  25. 25.920 − 153 =
  26. 26.737 + 137 =
  27. 27.A school has 597 children. 339 of them are girls. How many boys are there?
  28. 28.327 + 557 =
  29. 29.403 − 169 =
  30. 30.383 + 180 =
  31. 31.337 + 232 =
  32. 32.796 + ? = 990
  33. 33.405 − 173 =
  34. 34.454 + ? = 700
  35. 35.A train has 294 people in the front coaches and 108 people in the back coaches. How many people are on the train?
  36. 36.431 + 480 =
  37. 37.287 − ? = 8
  38. 38.925 − ? = 158
  39. 39.A train has 264 people in the front coaches and 597 people in the back coaches. How many people are on the train?
  40. 40.? − 189 = 149

Answer key

  1. 172
  2. 818
  3. 945
  4. 987
  5. 103
  6. 808
  7. 174
  8. 559
  9. 414
  10. 436
  11. 412
  12. 761
  13. 482
  14. 34
  15. 994
  16. 9
  17. 901
  18. 153
  19. 151
  20. 71
  21. 995
  22. 853
  23. 314
  24. 108
  25. 767
  26. 874
  27. 258
  28. 884
  29. 234
  30. 563
  31. 569
  32. 194
  33. 232
  34. 246
  35. 402
  36. 911
  37. 279
  38. 767
  39. 861
  40. 338

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