← 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 4 · 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. 1.224 + ? = 522
  2. 2.769 + ? = 955
  3. 3.A school has 467 children. 425 of them are girls. How many boys are there?
  4. 4.604 − 224 =
  5. 5.906 − ? = 390
  6. 6.928 − 623 =
  7. 7.295 − 116 =
  8. 8.713 − ? = 373
  9. 9.? + 665 = 931
  10. 10.601 − 488 =
  11. 11.? − 569 = 292
  12. 12.874 − 175 =
  13. 13.A train has 304 people in the front coaches and 387 people in the back coaches. How many people are on the train?
  14. 14.323 − ? = 9
  15. 15.A school has 583 children. 434 of them are girls. How many boys are there?
  16. 16.? − 283 = 688
  17. 17.889 + 103 =
  18. 18.711 + ? = 813
  19. 19.A train has 498 people in the front coaches and 263 people in the back coaches. How many people are on the train?
  20. 20.204 − 193 =
  21. 21.A train has 513 people in the front coaches and 272 people in the back coaches. How many people are on the train?
  22. 22.A school has 279 children. 263 of them are girls. How many boys are there?
  23. 23.352 + 361 =
  24. 24.883 − 264 =
  25. 25.579 + 266 =
  26. 26.594 + 179 =
  27. 27.424 − ? = 257
  28. 28.865 + 127 =
  29. 29.A train has 277 people in the front coaches and 401 people in the back coaches. How many people are on the train?
  30. 30.871 + 113 =
  31. 31.? − 142 = 141
  32. 32.431 + ? = 580
  33. 33.A train has 759 people in the front coaches and 168 people in the back coaches. How many people are on the train?
  34. 34.? + 209 = 375
  35. 35.A train has 776 people in the front coaches and 208 people in the back coaches. How many people are on the train?
  36. 36.A school has 315 children. 149 of them are girls. How many boys are there?
  37. 37.400 − 386 =
  38. 38.A train has 701 people in the front coaches and 147 people in the back coaches. How many people are on the train?
  39. 39.A train has 160 people in the front coaches and 828 people in the back coaches. How many people are on the train?
  40. 40.516 + 435 =

Answer key

  1. 298
  2. 186
  3. 42
  4. 380
  5. 516
  6. 305
  7. 179
  8. 340
  9. 266
  10. 113
  11. 861
  12. 699
  13. 691
  14. 314
  15. 149
  16. 971
  17. 992
  18. 102
  19. 761
  20. 11
  21. 785
  22. 16
  23. 713
  24. 619
  25. 845
  26. 773
  27. 167
  28. 992
  29. 678
  30. 984
  31. 283
  32. 149
  33. 927
  34. 166
  35. 984
  36. 166
  37. 14
  38. 848
  39. 988
  40. 951

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