Class 3 Maths Worksheet: Addition and Subtraction

Maths worksheets lesson 17: 3-digit addition and subtraction · Set 341 · 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. 1.911 − 133 =
2. 2.A school has 695 children. 473 of them are girls. How many boys are there?
3. 3.A train has 578 people in the front coaches and 213 people in the back coaches. How many people are on the train?
4. 4.459 + 335 =
5. 5.251 + ? = 911
6. 6.818 + 126 =
7. 7.417 + ? = 766
8. 8.552 − 202 =
9. 9.412 − 187 =
10. 10.709 − 379 =
11. 11.151 + 174 =
12. 12.707 − 632 =
13. 13.A school has 598 children. 590 of them are girls. How many boys are there?
14. 14.A train has 545 people in the front coaches and 434 people in the back coaches. How many people are on the train?
15. 15.A train has 655 people in the front coaches and 194 people in the back coaches. How many people are on the train?
16. 16.A train has 142 people in the front coaches and 326 people in the back coaches. How many people are on the train?
17. 17.A train has 299 people in the front coaches and 439 people in the back coaches. How many people are on the train?
18. 18.631 + 161 =
19. 19.A train has 776 people in the front coaches and 158 people in the back coaches. How many people are on the train?
20. 20.638 − 433 =
21. 21.A train has 756 people in the front coaches and 238 people in the back coaches. How many people are on the train?
22. 22.173 + 325 =
23. 23.866 − 532 =
24. 24.195 + ? = 397
25. 25.363 − 135 =
26. 26.A train has 867 people in the front coaches and 121 people in the back coaches. How many people are on the train?
27. 27.402 − ? = 298
28. 28.A train has 248 people in the front coaches and 724 people in the back coaches. How many people are on the train?
29. 29.A train has 527 people in the front coaches and 249 people in the back coaches. How many people are on the train?
30. 30.322 + 211 =
31. 31.770 − 259 =
32. 32.265 + 597 =
33. 33.A school has 841 children. 337 of them are girls. How many boys are there?
34. 34.502 + ? = 758
35. 35.315 − 245 =
36. 36.450 − 167 =
37. 37.A school has 213 children. 194 of them are girls. How many boys are there?
38. 38.? + 306 = 730
39. 39.376 − 269 =
40. 40.149 + 839 =

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