Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 883 · 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.A train has 770 people in the front coaches and 165 people in the back coaches. How many people are on the train?
2. 2.600 + ? = 896
3. 3.638 − ? = 209
4. 4.? + 234 = 335
5. 5.A train has 298 people in the front coaches and 243 people in the back coaches. How many people are on the train?
6. 6.427 − 106 =
7. 7.? + 231 = 830
8. 8.? + 389 = 541
9. 9.631 − ? = 263
10. 10.A school has 276 children. 132 of them are girls. How many boys are there?
11. 11.? − 151 = 306
12. 12.? + 209 = 949
13. 13.574 + 224 =
14. 14.606 + 210 =
15. 15.A train has 885 people in the front coaches and 111 people in the back coaches. How many people are on the train?
16. 16.A train has 891 people in the front coaches and 104 people in the back coaches. How many people are on the train?
17. 17.A school has 735 children. 426 of them are girls. How many boys are there?
18. 18.524 + ? = 963
19. 19.A school has 666 children. 355 of them are girls. How many boys are there?
20. 20.376 + ? = 976
21. 21.670 − 662 =
22. 22.198 + ? = 656
23. 23.403 − 118 =
24. 24.A train has 302 people in the front coaches and 614 people in the back coaches. How many people are on the train?
25. 25.444 − 178 =
26. 26.577 − 208 =
27. 27.A train has 164 people in the front coaches and 175 people in the back coaches. How many people are on the train?
28. 28.A train has 298 people in the front coaches and 139 people in the back coaches. How many people are on the train?
29. 29.A train has 146 people in the front coaches and 208 people in the back coaches. How many people are on the train?
30. 30.A train has 639 people in the front coaches and 218 people in the back coaches. How many people are on the train?
31. 31.A school has 675 children. 218 of them are girls. How many boys are there?
32. 32.109 + 741 =
33. 33.269 + ? = 997
34. 34.? − 211 = 259
35. 35.861 + ? = 995
36. 36.A train has 667 people in the front coaches and 232 people in the back coaches. How many people are on the train?
37. 37.A train has 657 people in the front coaches and 283 people in the back coaches. How many people are on the train?
38. 38.A school has 791 children. 352 of them are girls. How many boys are there?
39. 39.332 + 306 =
40. 40.A school has 211 children. 178 of them are girls. How many boys are there?

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