← 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 475 · 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. 1.275 − 213 =
  2. 2.174 + 524 =
  3. 3.400 − ? = 179
  4. 4.888 − 660 =
  5. 5.A school has 322 children. 281 of them are girls. How many boys are there?
  6. 6.545 + 193 =
  7. 7.A train has 175 people in the front coaches and 365 people in the back coaches. How many people are on the train?
  8. 8.A school has 883 children. 600 of them are girls. How many boys are there?
  9. 9.A school has 746 children. 442 of them are girls. How many boys are there?
  10. 10.279 + 471 =
  11. 11.781 − 774 =
  12. 12.926 − 746 =
  13. 13.601 + ? = 858
  14. 14.433 − 245 =
  15. 15.? − 222 = 87
  16. 16.917 − ? = 654
  17. 17.A train has 259 people in the front coaches and 204 people in the back coaches. How many people are on the train?
  18. 18.A train has 864 people in the front coaches and 114 people in the back coaches. How many people are on the train?
  19. 19.A train has 711 people in the front coaches and 214 people in the back coaches. How many people are on the train?
  20. 20.? − 311 = 84
  21. 21.326 − ? = 28
  22. 22.? + 875 = 975
  23. 23.958 − 591 =
  24. 24.318 − 131 =
  25. 25.437 − 266 =
  26. 26.A school has 402 children. 286 of them are girls. How many boys are there?
  27. 27.252 + 158 =
  28. 28.344 + 463 =
  29. 29.A train has 849 people in the front coaches and 133 people in the back coaches. How many people are on the train?
  30. 30.A school has 324 children. 304 of them are girls. How many boys are there?
  31. 31.210 + 508 =
  32. 32.337 − 293 =
  33. 33.101 + ? = 270
  34. 34.526 − ? = 313
  35. 35.A train has 260 people in the front coaches and 559 people in the back coaches. How many people are on the train?
  36. 36.150 + ? = 371
  37. 37.749 − 722 =
  38. 38.810 + ? = 955
  39. 39.A train has 651 people in the front coaches and 135 people in the back coaches. How many people are on the train?
  40. 40.380 − 212 =

Answer key

  1. 62
  2. 698
  3. 221
  4. 228
  5. 41
  6. 738
  7. 540
  8. 283
  9. 304
  10. 750
  11. 7
  12. 180
  13. 257
  14. 188
  15. 309
  16. 263
  17. 463
  18. 978
  19. 925
  20. 395
  21. 298
  22. 100
  23. 367
  24. 187
  25. 171
  26. 116
  27. 410
  28. 807
  29. 982
  30. 20
  31. 718
  32. 44
  33. 169
  34. 213
  35. 819
  36. 221
  37. 27
  38. 145
  39. 786
  40. 168

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