← 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 401 · 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 379 children. 273 of them are girls. How many boys are there?
  2. 2.242 − ? = 130
  3. 3.624 + 213 =
  4. 4.533 + 228 =
  5. 5.691 − ? = 201
  6. 6.717 + 279 =
  7. 7.207 + ? = 317
  8. 8.A train has 231 people in the front coaches and 116 people in the back coaches. How many people are on the train?
  9. 9.814 − 638 =
  10. 10.A train has 268 people in the front coaches and 284 people in the back coaches. How many people are on the train?
  11. 11.201 + ? = 306
  12. 12.A train has 163 people in the front coaches and 314 people in the back coaches. How many people are on the train?
  13. 13.609 + 214 =
  14. 14.A school has 766 children. 415 of them are girls. How many boys are there?
  15. 15.A school has 954 children. 301 of them are girls. How many boys are there?
  16. 16.590 + 352 =
  17. 17.A train has 171 people in the front coaches and 666 people in the back coaches. How many people are on the train?
  18. 18.396 + 225 =
  19. 19.448 + 431 =
  20. 20.780 + ? = 912
  21. 21.A train has 579 people in the front coaches and 419 people in the back coaches. How many people are on the train?
  22. 22.448 + 199 =
  23. 23.? − 407 = 485
  24. 24.495 + ? = 842
  25. 25.374 + 409 =
  26. 26.A school has 732 children. 709 of them are girls. How many boys are there?
  27. 27.367 + ? = 551
  28. 28.854 − 653 =
  29. 29.765 + 181 =
  30. 30.A train has 632 people in the front coaches and 133 people in the back coaches. How many people are on the train?
  31. 31.A school has 597 children. 579 of them are girls. How many boys are there?
  32. 32.A train has 450 people in the front coaches and 277 people in the back coaches. How many people are on the train?
  33. 33.A train has 291 people in the front coaches and 207 people in the back coaches. How many people are on the train?
  34. 34.? + 340 = 886
  35. 35.? − 228 = 8
  36. 36.782 + ? = 989
  37. 37.A train has 190 people in the front coaches and 542 people in the back coaches. How many people are on the train?
  38. 38.547 + ? = 652
  39. 39.A train has 229 people in the front coaches and 529 people in the back coaches. How many people are on the train?
  40. 40.A train has 174 people in the front coaches and 367 people in the back coaches. How many people are on the train?

Answer key

  1. 106
  2. 112
  3. 837
  4. 761
  5. 490
  6. 996
  7. 110
  8. 347
  9. 176
  10. 552
  11. 105
  12. 477
  13. 823
  14. 351
  15. 653
  16. 942
  17. 837
  18. 621
  19. 879
  20. 132
  21. 998
  22. 647
  23. 892
  24. 347
  25. 783
  26. 23
  27. 184
  28. 201
  29. 946
  30. 765
  31. 18
  32. 727
  33. 498
  34. 546
  35. 236
  36. 207
  37. 732
  38. 105
  39. 758
  40. 541

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