Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 253 · 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. 1.444 − 107 =
2. 2.341 + 186 =
3. 3.A train has 522 people in the front coaches and 346 people in the back coaches. How many people are on the train?
4. 4.A school has 410 children. 282 of them are girls. How many boys are there?
5. 5.576 − ? = 434
6. 6.? − 296 = 263
7. 7.A train has 268 people in the front coaches and 186 people in the back coaches. How many people are on the train?
8. 8.A school has 891 children. 869 of them are girls. How many boys are there?
9. 9.674 − ? = 192
10. 10.A school has 530 children. 393 of them are girls. How many boys are there?
11. 11.? + 755 = 945
12. 12.? + 814 = 976
13. 13.309 + 438 =
14. 14.548 + ? = 977
15. 15.801 + 130 =
16. 16.496 − ? = 293
17. 17.290 + 595 =
18. 18.A train has 777 people in the front coaches and 109 people in the back coaches. How many people are on the train?
19. 19.704 − 316 =
20. 20.809 + ? = 918
21. 21.523 − 173 =
22. 22.321 − ? = 214
23. 23.837 + 105 =
24. 24.449 + ? = 649
25. 25.? + 770 = 900
26. 26.167 + 122 =
27. 27.A train has 296 people in the front coaches and 435 people in the back coaches. How many people are on the train?
28. 28.894 − 132 =
29. 29.339 − 217 =
30. 30.593 + 307 =
31. 31.116 + 218 =
32. 32.248 + ? = 584
33. 33.616 − 210 =
34. 34.792 − ? = 608
35. 35.448 + 390 =
36. 36.521 + ? = 786
37. 37.A train has 209 people in the front coaches and 759 people in the back coaches. How many people are on the train?
38. 38.895 + ? = 995
39. 39.863 + 104 =
40. 40.940 − ? = 192

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