← 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 110 · 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 school has 453 children. 413 of them are girls. How many boys are there?
  2. 2.245 + 549 =
  3. 3.A school has 884 children. 171 of them are girls. How many boys are there?
  4. 4.A train has 361 people in the front coaches and 384 people in the back coaches. How many people are on the train?
  5. 5.310 − 102 =
  6. 6.466 + ? = 782
  7. 7.A train has 427 people in the front coaches and 377 people in the back coaches. How many people are on the train?
  8. 8.A train has 395 people in the front coaches and 230 people in the back coaches. How many people are on the train?
  9. 9.A school has 332 children. 201 of them are girls. How many boys are there?
  10. 10.264 + 359 =
  11. 11.597 + ? = 728
  12. 12.A train has 869 people in the front coaches and 117 people in the back coaches. How many people are on the train?
  13. 13.A school has 920 children. 554 of them are girls. How many boys are there?
  14. 14.363 + 429 =
  15. 15.A train has 156 people in the front coaches and 309 people in the back coaches. How many people are on the train?
  16. 16.552 + ? = 788
  17. 17.149 + 103 =
  18. 18.A school has 581 children. 196 of them are girls. How many boys are there?
  19. 19.880 − 141 =
  20. 20.A school has 329 children. 203 of them are girls. How many boys are there?
  21. 21.? − 481 = 229
  22. 22.292 + 264 =
  23. 23.727 + 105 =
  24. 24.728 − ? = 179
  25. 25.? − 147 = 446
  26. 26.A train has 202 people in the front coaches and 665 people in the back coaches. How many people are on the train?
  27. 27.A train has 845 people in the front coaches and 146 people in the back coaches. How many people are on the train?
  28. 28.A school has 496 children. 119 of them are girls. How many boys are there?
  29. 29.258 − 177 =
  30. 30.752 − ? = 197
  31. 31.A train has 768 people in the front coaches and 157 people in the back coaches. How many people are on the train?
  32. 32.840 − 524 =
  33. 33.577 + 175 =
  34. 34.825 − 303 =
  35. 35.581 − ? = 343
  36. 36.A school has 774 children. 154 of them are girls. How many boys are there?
  37. 37.140 + ? = 961
  38. 38.? − 533 = 13
  39. 39.599 − 538 =
  40. 40.A school has 430 children. 192 of them are girls. How many boys are there?

Answer key

  1. 40
  2. 794
  3. 713
  4. 745
  5. 208
  6. 316
  7. 804
  8. 625
  9. 131
  10. 623
  11. 131
  12. 986
  13. 366
  14. 792
  15. 465
  16. 236
  17. 252
  18. 385
  19. 739
  20. 126
  21. 710
  22. 556
  23. 832
  24. 549
  25. 593
  26. 867
  27. 991
  28. 377
  29. 81
  30. 555
  31. 925
  32. 316
  33. 752
  34. 522
  35. 238
  36. 620
  37. 821
  38. 546
  39. 61
  40. 238

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