← 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 777 · 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.? − 362 = 91
  2. 2.? − 119 = 709
  3. 3.792 − 410 =
  4. 4.? − 122 = 177
  5. 5.326 + 622 =
  6. 6.586 − ? = 158
  7. 7.821 + ? = 991
  8. 8.393 − 242 =
  9. 9.A train has 577 people in the front coaches and 255 people in the back coaches. How many people are on the train?
  10. 10.A train has 672 people in the front coaches and 145 people in the back coaches. How many people are on the train?
  11. 11.682 − ? = 19
  12. 12.380 + 443 =
  13. 13.240 + 499 =
  14. 14.193 + ? = 425
  15. 15.A train has 694 people in the front coaches and 237 people in the back coaches. How many people are on the train?
  16. 16.A school has 335 children. 184 of them are girls. How many boys are there?
  17. 17.587 − 561 =
  18. 18.892 − 341 =
  19. 19.853 − 220 =
  20. 20.A train has 340 people in the front coaches and 263 people in the back coaches. How many people are on the train?
  21. 21.748 + 219 =
  22. 22.A train has 448 people in the front coaches and 153 people in the back coaches. How many people are on the train?
  23. 23.A train has 745 people in the front coaches and 174 people in the back coaches. How many people are on the train?
  24. 24.? + 763 = 980
  25. 25.508 − 197 =
  26. 26.901 − ? = 774
  27. 27.? − 202 = 121
  28. 28.107 + 396 =
  29. 29.A school has 374 children. 325 of them are girls. How many boys are there?
  30. 30.A train has 103 people in the front coaches and 387 people in the back coaches. How many people are on the train?
  31. 31.A school has 409 children. 381 of them are girls. How many boys are there?
  32. 32.675 − ? = 480
  33. 33.A train has 870 people in the front coaches and 107 people in the back coaches. How many people are on the train?
  34. 34.A school has 518 children. 285 of them are girls. How many boys are there?
  35. 35.770 + 181 =
  36. 36.627 + 281 =
  37. 37.332 + 107 =
  38. 38.800 + 178 =
  39. 39.A school has 281 children. 150 of them are girls. How many boys are there?
  40. 40.A train has 244 people in the front coaches and 117 people in the back coaches. How many people are on the train?

Answer key

  1. 453
  2. 828
  3. 382
  4. 299
  5. 948
  6. 428
  7. 170
  8. 151
  9. 832
  10. 817
  11. 663
  12. 823
  13. 739
  14. 232
  15. 931
  16. 151
  17. 26
  18. 551
  19. 633
  20. 603
  21. 967
  22. 601
  23. 919
  24. 217
  25. 311
  26. 127
  27. 323
  28. 503
  29. 49
  30. 490
  31. 28
  32. 195
  33. 977
  34. 233
  35. 951
  36. 908
  37. 439
  38. 978
  39. 131
  40. 361

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