Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 62 · 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. 1.839 − ? = 716
2. 2.217 − 116 =
3. 3.? − 223 = 274
4. 4.594 + 161 =
5. 5.752 + ? = 923
6. 6.723 − 191 =
7. 7.? + 517 = 663
8. 8.110 + ? = 606
9. 9.? + 695 = 953
10. 10.340 + 373 =
11. 11.779 − ? = 163
12. 12.A school has 249 children. 227 of them are girls. How many boys are there?
13. 13.A school has 759 children. 164 of them are girls. How many boys are there?
14. 14.A school has 542 children. 235 of them are girls. How many boys are there?
15. 15.713 − 250 =
16. 16.A school has 420 children. 231 of them are girls. How many boys are there?
17. 17.474 − 328 =
18. 18.A school has 314 children. 207 of them are girls. How many boys are there?
19. 19.599 − ? = 326
20. 20.A school has 948 children. 531 of them are girls. How many boys are there?
21. 21.725 + ? = 865
22. 22.632 − 581 =
23. 23.784 − 257 =
24. 24.A school has 200 children. 189 of them are girls. How many boys are there?
25. 25.761 − 406 =
26. 26.417 − 250 =
27. 27.A school has 924 children. 511 of them are girls. How many boys are there?
28. 28.502 + 377 =
29. 29.524 + 142 =
30. 30.678 − 301 =
31. 31.222 − ? = 2
32. 32.266 + ? = 780
33. 33.440 + 434 =
34. 34.664 + ? = 876
35. 35.531 − 145 =
36. 36.101 + ? = 300
37. 37.889 + 104 =
38. 38.247 + 338 =
39. 39.764 − 349 =
40. 40.905 − 812 =

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