← 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 309 · 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. 1.984 − 839 =
  2. 2.799 + ? = 988
  3. 3.617 + 244 =
  4. 4.557 + 186 =
  5. 5.A school has 523 children. 249 of them are girls. How many boys are there?
  6. 6.184 + 693 =
  7. 7.? − 674 = 139
  8. 8.A school has 224 children. 155 of them are girls. How many boys are there?
  9. 9.575 − 306 =
  10. 10.? + 567 = 978
  11. 11.A train has 367 people in the front coaches and 295 people in the back coaches. How many people are on the train?
  12. 12.305 + 376 =
  13. 13.710 + ? = 874
  14. 14.923 − 796 =
  15. 15.A school has 962 children. 123 of them are girls. How many boys are there?
  16. 16.872 + ? = 974
  17. 17.803 + 178 =
  18. 18.A train has 277 people in the front coaches and 566 people in the back coaches. How many people are on the train?
  19. 19.859 − 602 =
  20. 20.A school has 635 children. 291 of them are girls. How many boys are there?
  21. 21.142 + 344 =
  22. 22.168 + 357 =
  23. 23.A train has 698 people in the front coaches and 161 people in the back coaches. How many people are on the train?
  24. 24.? + 864 = 991
  25. 25.741 − 481 =
  26. 26.733 + 197 =
  27. 27.330 − 324 =
  28. 28.119 + ? = 465
  29. 29.A train has 646 people in the front coaches and 207 people in the back coaches. How many people are on the train?
  30. 30.A train has 465 people in the front coaches and 132 people in the back coaches. How many people are on the train?
  31. 31.A train has 466 people in the front coaches and 220 people in the back coaches. How many people are on the train?
  32. 32.A train has 452 people in the front coaches and 414 people in the back coaches. How many people are on the train?
  33. 33.A train has 810 people in the front coaches and 129 people in the back coaches. How many people are on the train?
  34. 34.A school has 424 children. 288 of them are girls. How many boys are there?
  35. 35.? − 216 = 663
  36. 36.269 + 495 =
  37. 37.A school has 229 children. 149 of them are girls. How many boys are there?
  38. 38.A school has 806 children. 263 of them are girls. How many boys are there?
  39. 39.463 − 305 =
  40. 40.662 − 423 =

Answer key

  1. 145
  2. 189
  3. 861
  4. 743
  5. 274
  6. 877
  7. 813
  8. 69
  9. 269
  10. 411
  11. 662
  12. 681
  13. 164
  14. 127
  15. 839
  16. 102
  17. 981
  18. 843
  19. 257
  20. 344
  21. 486
  22. 525
  23. 859
  24. 127
  25. 260
  26. 930
  27. 6
  28. 346
  29. 853
  30. 597
  31. 686
  32. 866
  33. 939
  34. 136
  35. 879
  36. 764
  37. 80
  38. 543
  39. 158
  40. 239

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