← 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 765 · 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. 1.206 − 194 =
  2. 2.? + 893 = 993
  3. 3.577 − ? = 197
  4. 4.A school has 715 children. 413 of them are girls. How many boys are there?
  5. 5.170 + 208 =
  6. 6.330 + 369 =
  7. 7.581 − ? = 88
  8. 8.A train has 216 people in the front coaches and 552 people in the back coaches. How many people are on the train?
  9. 9.382 − ? = 209
  10. 10.456 − ? = 43
  11. 11.A train has 593 people in the front coaches and 235 people in the back coaches. How many people are on the train?
  12. 12.A school has 765 children. 580 of them are girls. How many boys are there?
  13. 13.A train has 704 people in the front coaches and 241 people in the back coaches. How many people are on the train?
  14. 14.A school has 762 children. 749 of them are girls. How many boys are there?
  15. 15.714 − 606 =
  16. 16.608 + 170 =
  17. 17.A train has 500 people in the front coaches and 346 people in the back coaches. How many people are on the train?
  18. 18.? + 537 = 732
  19. 19.574 + 285 =
  20. 20.633 − ? = 207
  21. 21.A train has 570 people in the front coaches and 339 people in the back coaches. How many people are on the train?
  22. 22.299 − ? = 91
  23. 23.A school has 692 children. 327 of them are girls. How many boys are there?
  24. 24.256 + 130 =
  25. 25.A school has 229 children. 115 of them are girls. How many boys are there?
  26. 26.? + 674 = 846
  27. 27.827 + 135 =
  28. 28.498 − ? = 291
  29. 29.929 − ? = 803
  30. 30.931 − ? = 272
  31. 31.246 − 218 =
  32. 32.304 + 139 =
  33. 33.694 − 301 =
  34. 34.? + 688 = 809
  35. 35.? − 114 = 224
  36. 36.636 − 604 =
  37. 37.A train has 828 people in the front coaches and 107 people in the back coaches. How many people are on the train?
  38. 38.800 + 157 =
  39. 39.A school has 221 children. 212 of them are girls. How many boys are there?
  40. 40.609 + 205 =

Answer key

  1. 12
  2. 100
  3. 380
  4. 302
  5. 378
  6. 699
  7. 493
  8. 768
  9. 173
  10. 413
  11. 828
  12. 185
  13. 945
  14. 13
  15. 108
  16. 778
  17. 846
  18. 195
  19. 859
  20. 426
  21. 909
  22. 208
  23. 365
  24. 386
  25. 114
  26. 172
  27. 962
  28. 207
  29. 126
  30. 659
  31. 28
  32. 443
  33. 393
  34. 121
  35. 338
  36. 32
  37. 935
  38. 957
  39. 9
  40. 814

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