← 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 495 · 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. 1.700 + 149 =
  2. 2.821 + ? = 997
  3. 3.300 + 412 =
  4. 4.A train has 660 people in the front coaches and 302 people in the back coaches. How many people are on the train?
  5. 5.578 + 303 =
  6. 6.714 + ? = 874
  7. 7.? + 293 = 537
  8. 8.604 − 425 =
  9. 9.A train has 307 people in the front coaches and 214 people in the back coaches. How many people are on the train?
  10. 10.A school has 646 children. 555 of them are girls. How many boys are there?
  11. 11.414 − 292 =
  12. 12.252 + 733 =
  13. 13.A train has 202 people in the front coaches and 317 people in the back coaches. How many people are on the train?
  14. 14.A school has 363 children. 295 of them are girls. How many boys are there?
  15. 15.235 + 759 =
  16. 16.272 + 326 =
  17. 17.219 + 565 =
  18. 18.? + 183 = 399
  19. 19.792 + 174 =
  20. 20.A train has 485 people in the front coaches and 336 people in the back coaches. How many people are on the train?
  21. 21.209 + 788 =
  22. 22.378 − 133 =
  23. 23.276 − 150 =
  24. 24.A train has 867 people in the front coaches and 103 people in the back coaches. How many people are on the train?
  25. 25.468 + 138 =
  26. 26.A train has 251 people in the front coaches and 441 people in the back coaches. How many people are on the train?
  27. 27.395 − ? = 141
  28. 28.346 − ? = 226
  29. 29.A school has 266 children. 169 of them are girls. How many boys are there?
  30. 30.A school has 709 children. 420 of them are girls. How many boys are there?
  31. 31.840 + 111 =
  32. 32.A train has 180 people in the front coaches and 158 people in the back coaches. How many people are on the train?
  33. 33.685 + ? = 799
  34. 34.594 + 188 =
  35. 35.661 − 495 =
  36. 36.A school has 645 children. 283 of them are girls. How many boys are there?
  37. 37.997 − ? = 660
  38. 38.A school has 227 children. 160 of them are girls. How many boys are there?
  39. 39.A school has 678 children. 289 of them are girls. How many boys are there?
  40. 40.? − 316 = 132

Answer key

  1. 849
  2. 176
  3. 712
  4. 962
  5. 881
  6. 160
  7. 244
  8. 179
  9. 521
  10. 91
  11. 122
  12. 985
  13. 519
  14. 68
  15. 994
  16. 598
  17. 784
  18. 216
  19. 966
  20. 821
  21. 997
  22. 245
  23. 126
  24. 970
  25. 606
  26. 692
  27. 254
  28. 120
  29. 97
  30. 289
  31. 951
  32. 338
  33. 114
  34. 782
  35. 166
  36. 362
  37. 337
  38. 67
  39. 389
  40. 448

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