← 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 294 · 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 967 children. 931 of them are girls. How many boys are there?
  2. 2.320 − 260 =
  3. 3.549 + 366 =
  4. 4.A train has 183 people in the front coaches and 608 people in the back coaches. How many people are on the train?
  5. 5.276 + ? = 653
  6. 6.A train has 405 people in the front coaches and 517 people in the back coaches. How many people are on the train?
  7. 7.801 − ? = 125
  8. 8.637 + 185 =
  9. 9.318 − ? = 112
  10. 10.A school has 283 children. 212 of them are girls. How many boys are there?
  11. 11.? − 630 = 60
  12. 12.A train has 743 people in the front coaches and 235 people in the back coaches. How many people are on the train?
  13. 13.703 − ? = 324
  14. 14.A train has 102 people in the front coaches and 496 people in the back coaches. How many people are on the train?
  15. 15.361 + 278 =
  16. 16.728 + ? = 919
  17. 17.A school has 563 children. 388 of them are girls. How many boys are there?
  18. 18.237 + ? = 979
  19. 19.A train has 194 people in the front coaches and 668 people in the back coaches. How many people are on the train?
  20. 20.A school has 783 children. 579 of them are girls. How many boys are there?
  21. 21.? − 356 = 30
  22. 22.672 + 310 =
  23. 23.565 − 479 =
  24. 24.731 − 345 =
  25. 25.? + 670 = 817
  26. 26.802 + 108 =
  27. 27.A school has 210 children. 159 of them are girls. How many boys are there?
  28. 28.517 + 113 =
  29. 29.A train has 500 people in the front coaches and 117 people in the back coaches. How many people are on the train?
  30. 30.592 − 117 =
  31. 31.391 − 204 =
  32. 32.187 + 301 =
  33. 33.A school has 962 children. 514 of them are girls. How many boys are there?
  34. 34.? − 169 = 245
  35. 35.A school has 501 children. 327 of them are girls. How many boys are there?
  36. 36.A train has 127 people in the front coaches and 788 people in the back coaches. How many people are on the train?
  37. 37.249 − 135 =
  38. 38.? + 144 = 576
  39. 39.358 + 162 =
  40. 40.580 − ? = 436

Answer key

  1. 36
  2. 60
  3. 915
  4. 791
  5. 377
  6. 922
  7. 676
  8. 822
  9. 206
  10. 71
  11. 690
  12. 978
  13. 379
  14. 598
  15. 639
  16. 191
  17. 175
  18. 742
  19. 862
  20. 204
  21. 386
  22. 982
  23. 86
  24. 386
  25. 147
  26. 910
  27. 51
  28. 630
  29. 617
  30. 475
  31. 187
  32. 488
  33. 448
  34. 414
  35. 174
  36. 915
  37. 114
  38. 432
  39. 520
  40. 144

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