← 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 739 · 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 186 people in the front coaches and 696 people in the back coaches. How many people are on the train?
  2. 2.A train has 697 people in the front coaches and 241 people in the back coaches. How many people are on the train?
  3. 3.630 + 195 =
  4. 4.962 − ? = 302
  5. 5.A train has 834 people in the front coaches and 105 people in the back coaches. How many people are on the train?
  6. 6.442 − 203 =
  7. 7.A school has 354 children. 277 of them are girls. How many boys are there?
  8. 8.562 − 308 =
  9. 9.852 + 117 =
  10. 10.A school has 552 children. 433 of them are girls. How many boys are there?
  11. 11.A train has 346 people in the front coaches and 213 people in the back coaches. How many people are on the train?
  12. 12.551 + 138 =
  13. 13.724 + ? = 975
  14. 14.985 − 435 =
  15. 15.704 + 268 =
  16. 16.377 − ? = 182
  17. 17.A school has 867 children. 576 of them are girls. How many boys are there?
  18. 18.A school has 356 children. 201 of them are girls. How many boys are there?
  19. 19.676 + ? = 862
  20. 20.672 − 596 =
  21. 21.A train has 636 people in the front coaches and 153 people in the back coaches. How many people are on the train?
  22. 22.A school has 520 children. 274 of them are girls. How many boys are there?
  23. 23.205 + 217 =
  24. 24.667 + 172 =
  25. 25.707 + ? = 828
  26. 26.461 − 205 =
  27. 27.234 − 116 =
  28. 28.833 + ? = 937
  29. 29.581 − ? = 161
  30. 30.766 + ? = 871
  31. 31.677 + ? = 842
  32. 32.A school has 381 children. 295 of them are girls. How many boys are there?
  33. 33.802 − 442 =
  34. 34.623 + 121 =
  35. 35.285 + 554 =
  36. 36.764 − 601 =
  37. 37.A train has 530 people in the front coaches and 388 people in the back coaches. How many people are on the train?
  38. 38.273 − ? = 147
  39. 39.A train has 867 people in the front coaches and 109 people in the back coaches. How many people are on the train?
  40. 40.A school has 479 children. 104 of them are girls. How many boys are there?

Answer key

  1. 882
  2. 938
  3. 825
  4. 660
  5. 939
  6. 239
  7. 77
  8. 254
  9. 969
  10. 119
  11. 559
  12. 689
  13. 251
  14. 550
  15. 972
  16. 195
  17. 291
  18. 155
  19. 186
  20. 76
  21. 789
  22. 246
  23. 422
  24. 839
  25. 121
  26. 256
  27. 118
  28. 104
  29. 420
  30. 105
  31. 165
  32. 86
  33. 360
  34. 744
  35. 839
  36. 163
  37. 918
  38. 126
  39. 976
  40. 375

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