Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 348 · 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. 1.454 − ? = 51
2. 2.540 + ? = 974
3. 3.A train has 563 people in the front coaches and 249 people in the back coaches. How many people are on the train?
4. 4.753 + 152 =
5. 5.A school has 244 children. 198 of them are girls. How many boys are there?
6. 6.692 + ? = 954
7. 7.301 − ? = 12
8. 8.A train has 506 people in the front coaches and 362 people in the back coaches. How many people are on the train?
9. 9.A train has 494 people in the front coaches and 262 people in the back coaches. How many people are on the train?
10. 10.A train has 703 people in the front coaches and 282 people in the back coaches. How many people are on the train?
11. 11.? − 167 = 732
12. 12.723 + 103 =
13. 13.810 − 328 =
14. 14.881 + ? = 983
15. 15.A school has 661 children. 501 of them are girls. How many boys are there?
16. 16.308 − 188 =
17. 17.892 + 102 =
18. 18.362 − 162 =
19. 19.A school has 552 children. 161 of them are girls. How many boys are there?
20. 20.A train has 267 people in the front coaches and 631 people in the back coaches. How many people are on the train?
21. 21.A train has 306 people in the front coaches and 637 people in the back coaches. How many people are on the train?
22. 22.A school has 207 children. 133 of them are girls. How many boys are there?
23. 23.? − 735 = 217
24. 24.? − 804 = 117
25. 25.746 + 148 =
26. 26.380 + ? = 543
27. 27.A train has 535 people in the front coaches and 425 people in the back coaches. How many people are on the train?
28. 28.323 − ? = 143
29. 29.901 − ? = 387
30. 30.? − 242 = 606
31. 31.A train has 518 people in the front coaches and 205 people in the back coaches. How many people are on the train?
32. 32.A school has 767 children. 542 of them are girls. How many boys are there?
33. 33.? − 267 = 254
34. 34.384 + 171 =
35. 35.? − 319 = 384
36. 36.A school has 968 children. 918 of them are girls. How many boys are there?
37. 37.A train has 682 people in the front coaches and 230 people in the back coaches. How many people are on the train?
38. 38.A school has 314 children. 140 of them are girls. How many boys are there?
39. 39.923 − 837 =
40. 40.A train has 899 people in the front coaches and 100 people in the back coaches. How many people are on the train?

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