← 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 798 · 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. 1.920 − 374 =
  2. 2.862 − 606 =
  3. 3.A train has 597 people in the front coaches and 112 people in the back coaches. How many people are on the train?
  4. 4.288 − ? = 70
  5. 5.323 + 549 =
  6. 6.A school has 935 children. 618 of them are girls. How many boys are there?
  7. 7.158 + 188 =
  8. 8.? + 226 = 443
  9. 9.399 − ? = 146
  10. 10.744 + 178 =
  11. 11.278 + 207 =
  12. 12.553 + 141 =
  13. 13.A train has 274 people in the front coaches and 192 people in the back coaches. How many people are on the train?
  14. 14.A school has 570 children. 325 of them are girls. How many boys are there?
  15. 15.782 + 194 =
  16. 16.354 − ? = 145
  17. 17.367 − ? = 141
  18. 18.558 + 262 =
  19. 19.A school has 747 children. 366 of them are girls. How many boys are there?
  20. 20.? − 161 = 616
  21. 21.973 − 494 =
  22. 22.233 + ? = 681
  23. 23.387 − 225 =
  24. 24.240 − 204 =
  25. 25.? − 494 = 101
  26. 26.A school has 738 children. 170 of them are girls. How many boys are there?
  27. 27.494 + 271 =
  28. 28.316 − 284 =
  29. 29.A train has 103 people in the front coaches and 693 people in the back coaches. How many people are on the train?
  30. 30.249 + 336 =
  31. 31.837 + ? = 972
  32. 32.A train has 256 people in the front coaches and 176 people in the back coaches. How many people are on the train?
  33. 33.534 − 310 =
  34. 34.A school has 529 children. 209 of them are girls. How many boys are there?
  35. 35.? − 284 = 159
  36. 36.A train has 710 people in the front coaches and 240 people in the back coaches. How many people are on the train?
  37. 37.544 + ? = 693
  38. 38.505 + ? = 805
  39. 39.686 + ? = 806
  40. 40.A train has 505 people in the front coaches and 494 people in the back coaches. How many people are on the train?

Answer key

  1. 546
  2. 256
  3. 709
  4. 218
  5. 872
  6. 317
  7. 346
  8. 217
  9. 253
  10. 922
  11. 485
  12. 694
  13. 466
  14. 245
  15. 976
  16. 209
  17. 226
  18. 820
  19. 381
  20. 777
  21. 479
  22. 448
  23. 162
  24. 36
  25. 595
  26. 568
  27. 765
  28. 32
  29. 796
  30. 585
  31. 135
  32. 432
  33. 224
  34. 320
  35. 443
  36. 950
  37. 149
  38. 300
  39. 120
  40. 999

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