← 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 283 · 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 434 children. 189 of them are girls. How many boys are there?
  2. 2.697 − 663 =
  3. 3.891 + 101 =
  4. 4.359 + ? = 686
  5. 5.747 + 124 =
  6. 6.A train has 351 people in the front coaches and 570 people in the back coaches. How many people are on the train?
  7. 7.781 + 202 =
  8. 8.A train has 189 people in the front coaches and 737 people in the back coaches. How many people are on the train?
  9. 9.A train has 337 people in the front coaches and 444 people in the back coaches. How many people are on the train?
  10. 10.857 + 121 =
  11. 11.A school has 213 children. 187 of them are girls. How many boys are there?
  12. 12.? + 380 = 759
  13. 13.304 − ? = 113
  14. 14.A train has 483 people in the front coaches and 497 people in the back coaches. How many people are on the train?
  15. 15.A train has 366 people in the front coaches and 468 people in the back coaches. How many people are on the train?
  16. 16.? − 153 = 736
  17. 17.A school has 852 children. 463 of them are girls. How many boys are there?
  18. 18.303 − 200 =
  19. 19.513 + 164 =
  20. 20.731 + 258 =
  21. 21.A train has 470 people in the front coaches and 265 people in the back coaches. How many people are on the train?
  22. 22.447 + ? = 565
  23. 23.A train has 327 people in the front coaches and 256 people in the back coaches. How many people are on the train?
  24. 24.A school has 520 children. 448 of them are girls. How many boys are there?
  25. 25.? + 329 = 808
  26. 26.A school has 786 children. 240 of them are girls. How many boys are there?
  27. 27.? − 253 = 432
  28. 28.? + 847 = 986
  29. 29.838 − ? = 612
  30. 30.500 − ? = 79
  31. 31.285 + 642 =
  32. 32.919 − 470 =
  33. 33.512 − 135 =
  34. 34.320 − ? = 130
  35. 35.? + 586 = 694
  36. 36.A train has 479 people in the front coaches and 115 people in the back coaches. How many people are on the train?
  37. 37.353 + 267 =
  38. 38.164 + ? = 567
  39. 39.A train has 597 people in the front coaches and 374 people in the back coaches. How many people are on the train?
  40. 40.785 − 103 =

Answer key

  1. 245
  2. 34
  3. 992
  4. 327
  5. 871
  6. 921
  7. 983
  8. 926
  9. 781
  10. 978
  11. 26
  12. 379
  13. 191
  14. 980
  15. 834
  16. 889
  17. 389
  18. 103
  19. 677
  20. 989
  21. 735
  22. 118
  23. 583
  24. 72
  25. 479
  26. 546
  27. 685
  28. 139
  29. 226
  30. 421
  31. 927
  32. 449
  33. 377
  34. 190
  35. 108
  36. 594
  37. 620
  38. 403
  39. 971
  40. 682

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