Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 563 · 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.? + 840 = 994
2. 2.852 + 104 =
3. 3.483 − ? = 171
4. 4.667 + 235 =
5. 5.A school has 238 children. 234 of them are girls. How many boys are there?
6. 6.A train has 329 people in the front coaches and 195 people in the back coaches. How many people are on the train?
7. 7.A school has 423 children. 256 of them are girls. How many boys are there?
8. 8.? + 316 = 786
9. 9.159 + ? = 316
10. 10.A school has 258 children. 244 of them are girls. How many boys are there?
11. 11.328 − 238 =
12. 12.930 − 423 =
13. 13.? + 675 = 899
14. 14.208 − 140 =
15. 15.A train has 456 people in the front coaches and 221 people in the back coaches. How many people are on the train?
16. 16.226 − ? = 19
17. 17.A train has 143 people in the front coaches and 845 people in the back coaches. How many people are on the train?
18. 18.A school has 760 children. 139 of them are girls. How many boys are there?
19. 19.186 + 313 =
20. 20.A train has 217 people in the front coaches and 538 people in the back coaches. How many people are on the train?
21. 21.370 − ? = 9
22. 22.? − 124 = 158
23. 23.A school has 938 children. 202 of them are girls. How many boys are there?
24. 24.231 − ? = 12
25. 25.520 + 317 =
26. 26.A train has 625 people in the front coaches and 248 people in the back coaches. How many people are on the train?
27. 27.705 − 290 =
28. 28.A train has 143 people in the front coaches and 628 people in the back coaches. How many people are on the train?
29. 29.A school has 628 children. 255 of them are girls. How many boys are there?
30. 30.873 − 594 =
31. 31.736 − 449 =
32. 32.A train has 436 people in the front coaches and 505 people in the back coaches. How many people are on the train?
33. 33.128 + 618 =
34. 34.785 + ? = 959
35. 35.A train has 340 people in the front coaches and 285 people in the back coaches. How many people are on the train?
36. 36.536 − 522 =
37. 37.A train has 567 people in the front coaches and 293 people in the back coaches. How many people are on the train?
38. 38.A school has 350 children. 120 of them are girls. How many boys are there?
39. 39.197 + 352 =
40. 40.A train has 118 people in the front coaches and 425 people in the back coaches. How many people are on the train?

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