← 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 828 · 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. 1.838 + 152 =
  2. 2.A train has 890 people in the front coaches and 104 people in the back coaches. How many people are on the train?
  3. 3.720 − 677 =
  4. 4.204 − 151 =
  5. 5.274 − ? = 45
  6. 6.A school has 889 children. 727 of them are girls. How many boys are there?
  7. 7.? + 520 = 677
  8. 8.A school has 888 children. 254 of them are girls. How many boys are there?
  9. 9.213 + 153 =
  10. 10.A train has 836 people in the front coaches and 145 people in the back coaches. How many people are on the train?
  11. 11.A train has 497 people in the front coaches and 342 people in the back coaches. How many people are on the train?
  12. 12.? − 186 = 349
  13. 13.222 + ? = 764
  14. 14.A train has 463 people in the front coaches and 310 people in the back coaches. How many people are on the train?
  15. 15.577 − 476 =
  16. 16.534 − ? = 124
  17. 17.866 + 127 =
  18. 18.? − 119 = 220
  19. 19.? + 520 = 654
  20. 20.264 − 188 =
  21. 21.A school has 710 children. 508 of them are girls. How many boys are there?
  22. 22.615 + ? = 790
  23. 23.942 − 512 =
  24. 24.223 + 729 =
  25. 25.923 − 162 =
  26. 26.A train has 304 people in the front coaches and 659 people in the back coaches. How many people are on the train?
  27. 27.915 − 571 =
  28. 28.A train has 332 people in the front coaches and 470 people in the back coaches. How many people are on the train?
  29. 29.488 + 119 =
  30. 30.795 − 398 =
  31. 31.A school has 259 children. 228 of them are girls. How many boys are there?
  32. 32.A school has 545 children. 536 of them are girls. How many boys are there?
  33. 33.638 − 545 =
  34. 34.? + 686 = 791
  35. 35.? − 209 = 674
  36. 36.? + 644 = 922
  37. 37.383 + 473 =
  38. 38.628 − ? = 430
  39. 39.489 − 238 =
  40. 40.A train has 509 people in the front coaches and 383 people in the back coaches. How many people are on the train?

Answer key

  1. 990
  2. 994
  3. 43
  4. 53
  5. 229
  6. 162
  7. 157
  8. 634
  9. 366
  10. 981
  11. 839
  12. 535
  13. 542
  14. 773
  15. 101
  16. 410
  17. 993
  18. 339
  19. 134
  20. 76
  21. 202
  22. 175
  23. 430
  24. 952
  25. 761
  26. 963
  27. 344
  28. 802
  29. 607
  30. 397
  31. 31
  32. 9
  33. 93
  34. 105
  35. 883
  36. 278
  37. 856
  38. 198
  39. 251
  40. 892

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