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Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 274 · 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 386 children. 189 of them are girls. How many boys are there?
  2. 2.570 + 316 =
  3. 3.241 − 192 =
  4. 4.760 + 115 =
  5. 5.A school has 918 children. 160 of them are girls. How many boys are there?
  6. 6.162 + 733 =
  7. 7.A train has 276 people in the front coaches and 273 people in the back coaches. How many people are on the train?
  8. 8.? + 884 = 984
  9. 9.432 − ? = 236
  10. 10.212 − ? = 109
  11. 11.A train has 646 people in the front coaches and 134 people in the back coaches. How many people are on the train?
  12. 12.A school has 238 children. 180 of them are girls. How many boys are there?
  13. 13.623 + 257 =
  14. 14.503 + 374 =
  15. 15.513 − ? = 347
  16. 16.617 − ? = 16
  17. 17.? + 392 = 574
  18. 18.? − 490 = 230
  19. 19.262 + ? = 729
  20. 20.143 + 838 =
  21. 21.A train has 380 people in the front coaches and 548 people in the back coaches. How many people are on the train?
  22. 22.A train has 229 people in the front coaches and 361 people in the back coaches. How many people are on the train?
  23. 23.? − 844 = 57
  24. 24.? − 559 = 25
  25. 25.614 − 604 =
  26. 26.A school has 370 children. 260 of them are girls. How many boys are there?
  27. 27.875 − ? = 96
  28. 28.A train has 619 people in the front coaches and 167 people in the back coaches. How many people are on the train?
  29. 29.141 + ? = 276
  30. 30.A train has 876 people in the front coaches and 123 people in the back coaches. How many people are on the train?
  31. 31.A train has 583 people in the front coaches and 306 people in the back coaches. How many people are on the train?
  32. 32.A school has 870 children. 347 of them are girls. How many boys are there?
  33. 33.128 + 271 =
  34. 34.? + 601 = 744
  35. 35.508 + 101 =
  36. 36.A train has 707 people in the front coaches and 100 people in the back coaches. How many people are on the train?
  37. 37.A train has 837 people in the front coaches and 151 people in the back coaches. How many people are on the train?
  38. 38.917 − 758 =
  39. 39.? + 550 = 766
  40. 40.A school has 523 children. 470 of them are girls. How many boys are there?

Answer key

  1. 197
  2. 886
  3. 49
  4. 875
  5. 758
  6. 895
  7. 549
  8. 100
  9. 196
  10. 103
  11. 780
  12. 58
  13. 880
  14. 877
  15. 166
  16. 601
  17. 182
  18. 720
  19. 467
  20. 981
  21. 928
  22. 590
  23. 901
  24. 584
  25. 10
  26. 110
  27. 779
  28. 786
  29. 135
  30. 999
  31. 889
  32. 523
  33. 399
  34. 143
  35. 609
  36. 807
  37. 988
  38. 159
  39. 216
  40. 53

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