← 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 6 · 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. 1.219 + ? = 568
  2. 2.? − 123 = 109
  3. 3.844 + ? = 968
  4. 4.? + 809 = 987
  5. 5.691 + 106 =
  6. 6.649 − 442 =
  7. 7.247 − 124 =
  8. 8.A train has 335 people in the front coaches and 660 people in the back coaches. How many people are on the train?
  9. 9.? − 804 = 160
  10. 10.? − 227 = 711
  11. 11.594 − 467 =
  12. 12.? − 639 = 131
  13. 13.A school has 338 children. 255 of them are girls. How many boys are there?
  14. 14.519 + 459 =
  15. 15.180 + 134 =
  16. 16.847 − ? = 537
  17. 17.675 + ? = 810
  18. 18.162 + 502 =
  19. 19.A train has 106 people in the front coaches and 180 people in the back coaches. How many people are on the train?
  20. 20.A train has 874 people in the front coaches and 120 people in the back coaches. How many people are on the train?
  21. 21.696 − 148 =
  22. 22.830 − 125 =
  23. 23.A train has 776 people in the front coaches and 197 people in the back coaches. How many people are on the train?
  24. 24.A school has 841 children. 712 of them are girls. How many boys are there?
  25. 25.A train has 638 people in the front coaches and 239 people in the back coaches. How many people are on the train?
  26. 26.? − 463 = 481
  27. 27.537 − 247 =
  28. 28.A school has 755 children. 399 of them are girls. How many boys are there?
  29. 29.? + 508 = 743
  30. 30.619 − 212 =
  31. 31.? − 182 = 712
  32. 32.A school has 430 children. 234 of them are girls. How many boys are there?
  33. 33.963 − 168 =
  34. 34.? + 867 = 992
  35. 35.686 + 122 =
  36. 36.742 − 727 =
  37. 37.A train has 116 people in the front coaches and 269 people in the back coaches. How many people are on the train?
  38. 38.A school has 204 children. 158 of them are girls. How many boys are there?
  39. 39.492 + 456 =
  40. 40.? − 406 = 42

Answer key

  1. 349
  2. 232
  3. 124
  4. 178
  5. 797
  6. 207
  7. 123
  8. 995
  9. 964
  10. 938
  11. 127
  12. 770
  13. 83
  14. 978
  15. 314
  16. 310
  17. 135
  18. 664
  19. 286
  20. 994
  21. 548
  22. 705
  23. 973
  24. 129
  25. 877
  26. 944
  27. 290
  28. 356
  29. 235
  30. 407
  31. 894
  32. 196
  33. 795
  34. 125
  35. 808
  36. 15
  37. 385
  38. 46
  39. 948
  40. 448

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