Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 427 · 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.A train has 638 people in the front coaches and 309 people in the back coaches. How many people are on the train?
2. 2.A train has 131 people in the front coaches and 549 people in the back coaches. How many people are on the train?
3. 3.A train has 838 people in the front coaches and 146 people in the back coaches. How many people are on the train?
4. 4.? + 556 = 934
5. 5.211 + 187 =
6. 6.146 + 150 =
7. 7.? + 756 = 987
8. 8.436 − ? = 231
9. 9.? − 329 = 41
10. 10.351 − ? = 129
11. 11.406 − 225 =
12. 12.179 + 424 =
13. 13.333 − 109 =
14. 14.A train has 413 people in the front coaches and 537 people in the back coaches. How many people are on the train?
15. 15.A school has 654 children. 139 of them are girls. How many boys are there?
16. 16.847 − 649 =
17. 17.? + 583 = 744
18. 18.? + 741 = 888
19. 19.? + 596 = 717
20. 20.A train has 704 people in the front coaches and 264 people in the back coaches. How many people are on the train?
21. 21.A train has 804 people in the front coaches and 118 people in the back coaches. How many people are on the train?
22. 22.A school has 893 children. 143 of them are girls. How many boys are there?
23. 23.754 − 188 =
24. 24.871 + 111 =
25. 25.A train has 178 people in the front coaches and 406 people in the back coaches. How many people are on the train?
26. 26.536 − ? = 227
27. 27.449 + 427 =
28. 28.A train has 297 people in the front coaches and 691 people in the back coaches. How many people are on the train?
29. 29.912 − 213 =
30. 30.427 − ? = 49
31. 31.584 + 211 =
32. 32.A school has 997 children. 735 of them are girls. How many boys are there?
33. 33.620 − ? = 297
34. 34.431 − 132 =
35. 35.514 + 483 =
36. 36.971 − ? = 89
37. 37.A train has 463 people in the front coaches and 102 people in the back coaches. How many people are on the train?
38. 38.149 + 351 =
39. 39.399 + ? = 602
40. 40.? − 167 = 295

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