← 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 772 · 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 train has 355 people in the front coaches and 205 people in the back coaches. How many people are on the train?
  2. 2.? + 446 = 618
  3. 3.846 − 289 =
  4. 4.230 − 109 =
  5. 5.A train has 292 people in the front coaches and 480 people in the back coaches. How many people are on the train?
  6. 6.695 + 226 =
  7. 7.A train has 673 people in the front coaches and 279 people in the back coaches. How many people are on the train?
  8. 8.869 + 106 =
  9. 9.A train has 740 people in the front coaches and 158 people in the back coaches. How many people are on the train?
  10. 10.? − 333 = 124
  11. 11.195 + 419 =
  12. 12.784 + 149 =
  13. 13.? + 127 = 524
  14. 14.A school has 501 children. 293 of them are girls. How many boys are there?
  15. 15.301 − ? = 72
  16. 16.A school has 893 children. 681 of them are girls. How many boys are there?
  17. 17.? − 233 = 577
  18. 18.245 + 582 =
  19. 19.A train has 715 people in the front coaches and 114 people in the back coaches. How many people are on the train?
  20. 20.A school has 581 children. 327 of them are girls. How many boys are there?
  21. 21.A school has 289 children. 143 of them are girls. How many boys are there?
  22. 22.475 + ? = 983
  23. 23.A train has 545 people in the front coaches and 146 people in the back coaches. How many people are on the train?
  24. 24.782 − 701 =
  25. 25.628 + 313 =
  26. 26.670 − 385 =
  27. 27.875 − 396 =
  28. 28.291 − 176 =
  29. 29.292 + 248 =
  30. 30.A school has 733 children. 166 of them are girls. How many boys are there?
  31. 31.? − 187 = 142
  32. 32.A school has 367 children. 222 of them are girls. How many boys are there?
  33. 33.272 − 144 =
  34. 34.514 − ? = 384
  35. 35.A school has 855 children. 780 of them are girls. How many boys are there?
  36. 36.562 + 369 =
  37. 37.922 − 328 =
  38. 38.647 + ? = 785
  39. 39.565 − 101 =
  40. 40.791 + ? = 904

Answer key

  1. 560
  2. 172
  3. 557
  4. 121
  5. 772
  6. 921
  7. 952
  8. 975
  9. 898
  10. 457
  11. 614
  12. 933
  13. 397
  14. 208
  15. 229
  16. 212
  17. 810
  18. 827
  19. 829
  20. 254
  21. 146
  22. 508
  23. 691
  24. 81
  25. 941
  26. 285
  27. 479
  28. 115
  29. 540
  30. 567
  31. 329
  32. 145
  33. 128
  34. 130
  35. 75
  36. 931
  37. 594
  38. 138
  39. 464
  40. 113

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