Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 998 · 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.? − 230 = 120
2. 2.300 + ? = 661
3. 3.A train has 211 people in the front coaches and 141 people in the back coaches. How many people are on the train?
4. 4.A train has 732 people in the front coaches and 205 people in the back coaches. How many people are on the train?
5. 5.362 − ? = 230
6. 6.? − 202 = 239
7. 7.884 + 113 =
8. 8.665 + 103 =
9. 9.223 + 718 =
10. 10.A train has 198 people in the front coaches and 280 people in the back coaches. How many people are on the train?
11. 11.451 + 507 =
12. 12.? − 265 = 80
13. 13.267 − 223 =
14. 14.A train has 648 people in the front coaches and 331 people in the back coaches. How many people are on the train?
15. 15.A train has 867 people in the front coaches and 105 people in the back coaches. How many people are on the train?
16. 16.251 + ? = 755
17. 17.161 + ? = 317
18. 18.506 + 315 =
19. 19.852 + ? = 987
20. 20.534 − ? = 226
21. 21.? − 503 = 205
22. 22.A train has 207 people in the front coaches and 437 people in the back coaches. How many people are on the train?
23. 23.A train has 649 people in the front coaches and 232 people in the back coaches. How many people are on the train?
24. 24.A school has 469 children. 218 of them are girls. How many boys are there?
25. 25.A train has 632 people in the front coaches and 178 people in the back coaches. How many people are on the train?
26. 26.? − 158 = 462
27. 27.736 + ? = 948
28. 28.? − 127 = 150
29. 29.410 + ? = 963
30. 30.606 − 265 =
31. 31.A train has 492 people in the front coaches and 106 people in the back coaches. How many people are on the train?
32. 32.A school has 951 children. 414 of them are girls. How many boys are there?
33. 33.A school has 745 children. 235 of them are girls. How many boys are there?
34. 34.A train has 442 people in the front coaches and 191 people in the back coaches. How many people are on the train?
35. 35.350 + 578 =
36. 36.172 + 191 =
37. 37.725 + 102 =
38. 38.796 + ? = 973
39. 39.182 + 637 =
40. 40.878 + ? = 984

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