Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 638 · 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. 1.237 − 222 =
2. 2.A school has 360 children. 233 of them are girls. How many boys are there?
3. 3.496 − 421 =
4. 4.? − 686 = 214
5. 5.? + 440 = 864
6. 6.A train has 822 people in the front coaches and 156 people in the back coaches. How many people are on the train?
7. 7.? + 297 = 739
8. 8.385 − ? = 164
9. 9.421 + ? = 804
10. 10.A train has 162 people in the front coaches and 472 people in the back coaches. How many people are on the train?
11. 11.649 + ? = 773
12. 12.573 + 267 =
13. 13.A school has 281 children. 193 of them are girls. How many boys are there?
14. 14.A school has 813 children. 752 of them are girls. How many boys are there?
15. 15.949 − 137 =
16. 16.722 + ? = 864
17. 17.280 + 119 =
18. 18.303 + 453 =
19. 19.423 + 451 =
20. 20.861 + ? = 971
21. 21.693 + 154 =
22. 22.A train has 613 people in the front coaches and 332 people in the back coaches. How many people are on the train?
23. 23.? + 583 = 889
24. 24.510 − 151 =
25. 25.554 − 302 =
26. 26.830 + 128 =
27. 27.A train has 786 people in the front coaches and 106 people in the back coaches. How many people are on the train?
28. 28.A school has 478 children. 365 of them are girls. How many boys are there?
29. 29.741 − ? = 433
30. 30.216 + 523 =
31. 31.? + 689 = 956
32. 32.? + 332 = 876
33. 33.404 − ? = 49
34. 34.216 + 488 =
35. 35.147 + ? = 489
36. 36.696 + 119 =
37. 37.214 + 396 =
38. 38.? − 538 = 3
39. 39.358 + 244 =
40. 40.? + 582 = 956

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