3-Digit Addition (With Regrouping)

Three-digit addition with carrying in one or more columns. Print it free, with an answer key, or click New problems for a different version.

  • 2nd Grade, 3rd Grade
  • 25 problems
  • Common Core 2.NBT.B.7
  • Answer key included
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3-Digit Addition (With Regrouping)

Find each sum.

1.
631+282 
2.
807+683 
3.
327+308 
4.
217+279 
5.
168+544 
6.
318+948 
7.
608+986 
8.
199+114 
9.
354+695 
10.
568+794 
11.
763+309 
12.
193+699 
13.
208+109 
14.
163+879 
15.
866+890 
16.
661+734 
17.
169+920 
18.
634+431 
19.
575+250 
20.
219+257 
21.
414+759 
22.
671+507 
23.
658+578 
24.
636+610 
25.
861+224 
sheetsprout.orgSheet #510031
Answer key

3-Digit Addition (With Regrouping)

Find each sum.

1.
631+282913
2.
807+6831,490
3.
327+308635
4.
217+279496
5.
168+544712
6.
318+9481,266
7.
608+9861,594
8.
199+114313
9.
354+6951,049
10.
568+7941,362
11.
763+3091,072
12.
193+699892
13.
208+109317
14.
163+8791,042
15.
866+8901,756
16.
661+7341,395
17.
169+9201,089
18.
634+4311,065
19.
575+250825
20.
219+257476
21.
414+7591,173
22.
671+5071,178
23.
658+5781,236
24.
636+6101,246
25.
861+2241,085
sheetsprout.orgSheet #510031

About this worksheet

This 3-digit addition (with regrouping) worksheet has 25 problems and fits on a single US Letter page. It is aligned to Common Core standard 2.NBT.B.7 and is typically used in 2nd Grade, 3rd Grade. The problems are generated randomly each time you click New problems, so students can practice the same skill repeatedly without memorizing a fixed sheet.

Need something slightly different? Open Customize above to change the number of problems, the number ranges, or the layout. The link in your address bar updates as you go, so you can bookmark or share the exact worksheet you made.

Teaching tips for addition

  • Start with sums within 10 until they are automatic, then move to sums within 20. Fluency with these facts makes every later skill easier.
  • When introducing regrouping (carrying), let students use base-ten blocks or draw place-value charts for the first few problems.
  • Use the "No regrouping" sheets as a confidence builder before the "With regrouping" sheets on the same number size.
  • Short, daily practice (5–10 minutes) beats one long weekly session. Print a new sheet each day; problems are different every time.

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