← 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 519 · 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. 1.431 − 327 =
  2. 2.A school has 571 children. 239 of them are girls. How many boys are there?
  3. 3.A train has 518 people in the front coaches and 185 people in the back coaches. How many people are on the train?
  4. 4.528 − 263 =
  5. 5.A train has 795 people in the front coaches and 175 people in the back coaches. How many people are on the train?
  6. 6.669 + 214 =
  7. 7.557 − 166 =
  8. 8.A train has 128 people in the front coaches and 306 people in the back coaches. How many people are on the train?
  9. 9.? + 278 = 634
  10. 10.A school has 540 children. 533 of them are girls. How many boys are there?
  11. 11.406 − 335 =
  12. 12.208 + 155 =
  13. 13.752 − 146 =
  14. 14.A train has 351 people in the front coaches and 327 people in the back coaches. How many people are on the train?
  15. 15.351 − 161 =
  16. 16.A train has 385 people in the front coaches and 213 people in the back coaches. How many people are on the train?
  17. 17.369 + 100 =
  18. 18.? − 207 = 125
  19. 19.424 + ? = 805
  20. 20.? + 309 = 826
  21. 21.A school has 694 children. 134 of them are girls. How many boys are there?
  22. 22.413 − 166 =
  23. 23.A train has 188 people in the front coaches and 672 people in the back coaches. How many people are on the train?
  24. 24.? − 249 = 108
  25. 25.912 − 492 =
  26. 26.? + 719 = 855
  27. 27.379 − ? = 118
  28. 28.A train has 166 people in the front coaches and 730 people in the back coaches. How many people are on the train?
  29. 29.A train has 360 people in the front coaches and 606 people in the back coaches. How many people are on the train?
  30. 30.A train has 791 people in the front coaches and 203 people in the back coaches. How many people are on the train?
  31. 31.400 + 526 =
  32. 32.225 − 158 =
  33. 33.? − 148 = 318
  34. 34.752 + ? = 949
  35. 35.A train has 152 people in the front coaches and 667 people in the back coaches. How many people are on the train?
  36. 36.490 + 416 =
  37. 37.? − 334 = 30
  38. 38.527 + 147 =
  39. 39.486 + 395 =
  40. 40.A school has 663 children. 198 of them are girls. How many boys are there?

Answer key

  1. 104
  2. 332
  3. 703
  4. 265
  5. 970
  6. 883
  7. 391
  8. 434
  9. 356
  10. 7
  11. 71
  12. 363
  13. 606
  14. 678
  15. 190
  16. 598
  17. 469
  18. 332
  19. 381
  20. 517
  21. 560
  22. 247
  23. 860
  24. 357
  25. 420
  26. 136
  27. 261
  28. 896
  29. 966
  30. 994
  31. 926
  32. 67
  33. 466
  34. 197
  35. 819
  36. 906
  37. 364
  38. 674
  39. 881
  40. 465

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