Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 652 · 40 sums

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.

1. 1.841 − 146 =
2. 2.690 − 332 =
3. 3.190 + 523 =
4. 4.796 − 564 =
5. 5.A train has 836 people in the front coaches and 111 people in the back coaches. How many people are on the train?
6. 6.476 − 402 =
7. 7.611 − ? = 483
8. 8.204 − 118 =
9. 9.? + 446 = 719
10. 10.335 + 446 =
11. 11.930 − 376 =
12. 12.589 + 296 =
13. 13.532 + 317 =
14. 14.264 − 203 =
15. 15.A school has 881 children. 412 of them are girls. How many boys are there?
16. 16.? + 484 = 738
17. 17.793 − ? = 237
18. 18.A train has 231 people in the front coaches and 327 people in the back coaches. How many people are on the train?
19. 19.237 + 224 =
20. 20.729 − 184 =
21. 21.? − 216 = 132
22. 22.A school has 733 children. 384 of them are girls. How many boys are there?
23. 23.853 − ? = 146
24. 24.195 + 179 =
25. 25.443 + ? = 674
26. 26.? + 379 = 973
27. 27.? − 306 = 37
28. 28.413 − ? = 276
29. 29.? + 180 = 447
30. 30.641 + 305 =
31. 31.A train has 586 people in the front coaches and 370 people in the back coaches. How many people are on the train?
32. 32.489 + ? = 792
33. 33.572 − 280 =
34. 34.A train has 756 people in the front coaches and 230 people in the back coaches. How many people are on the train?
35. 35.391 + 470 =
36. 36.267 − ? = 147
37. 37.258 − 116 =
38. 38.815 + 159 =
39. 39.761 − 479 =
40. 40.? − 241 = 22

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