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Math · Grades 2–3

Addition Within 1000 Worksheets

Twenty 3-digit addition with sums up to 1,000 problems for grades 2–3, written in columns, so the place values line up. On this sheet 16 of the 20 problems need regrouping (carrying), and the largest sum is 876. The answer key prints on its own page. Switch to version B or C for a new set, or open it in the builder to change anything.

Customize this sheet
Version

Version A · 1 page + answer key · prints on US Letter or A4Customize version A

Math · AdditionAges 8–9 · Grade 3

Addition Drill

Add. Start with the ones. 20 problems, numbers from 100 to 500.

NameDate
1.394+482
2.401+254
3.448+296
4.173+412
5.175+493
6.359+208
7.482+219
8.242+495
9.138+472
10.252+155
11.422+397
12.167+463
13.444+238
14.305+357
15.335+335
16.497+324
17.254+178
18.381+494
19.332+147
20.337+302
Problems are made fresh from a seed; answers are computed.More free worksheets: handeware.com/learn
Math · AdditionAges 8–9 · Grade 3

Addition DrillANSWER KEY

Answers for all 20 problems.

1.394+482876
2.401+254655
3.448+296744
4.173+412585
5.175+493668
6.359+208567
7.482+219701
8.242+495737
9.138+472610
10.252+155407
11.422+397819
12.167+463630
13.444+238682
14.305+357662
15.335+335670
16.497+324821
17.254+178432
18.381+494875
19.332+147479
20.337+302639
Problems are made fresh from a seed; answers are computed.More free worksheets: handeware.com/learn

Version B · 1 page + answer key · prints on US Letter or A4Customize version B

Math · AdditionAges 8–9 · Grade 3

Addition Drill

Add. Start with the ones. 20 problems, numbers from 100 to 500.

NameDate
1.141+292
2.477+409
3.129+338
4.326+436
5.129+202
6.104+106
7.144+485
8.480+453
9.189+349
10.278+366
11.194+133
12.305+345
13.112+390
14.358+241
15.371+394
16.486+387
17.419+394
18.429+478
19.162+179
20.187+372
Problems are made fresh from a seed; answers are computed.More free worksheets: handeware.com/learn
Math · AdditionAges 8–9 · Grade 3

Addition DrillANSWER KEY

Answers for all 20 problems.

1.141+292433
2.477+409886
3.129+338467
4.326+436762
5.129+202331
6.104+106210
7.144+485629
8.480+453933
9.189+349538
10.278+366644
11.194+133327
12.305+345650
13.112+390502
14.358+241599
15.371+394765
16.486+387873
17.419+394813
18.429+478907
19.162+179341
20.187+372559
Problems are made fresh from a seed; answers are computed.More free worksheets: handeware.com/learn

Version C · 1 page + answer key · prints on US Letter or A4Customize version C

Math · AdditionAges 8–9 · Grade 3

Addition Drill

Add. Start with the ones. 20 problems, numbers from 100 to 500.

NameDate
1.169+114
2.192+375
3.497+172
4.103+281
5.160+244
6.273+359
7.166+420
8.326+409
9.322+386
10.282+185
11.278+275
12.399+103
13.403+391
14.401+307
15.265+280
16.377+199
17.415+414
18.434+372
19.425+364
20.392+339
Problems are made fresh from a seed; answers are computed.More free worksheets: handeware.com/learn
Math · AdditionAges 8–9 · Grade 3

Addition DrillANSWER KEY

Answers for all 20 problems.

1.169+114283
2.192+375567
3.497+172669
4.103+281384
5.160+244404
6.273+359632
7.166+420586
8.326+409735
9.322+386708
10.282+185467
11.278+275553
12.399+103502
13.403+391794
14.401+307708
15.265+280545
16.377+199576
17.415+414829
18.434+372806
19.425+364789
20.392+339731
Problems are made fresh from a seed; answers are computed.More free worksheets: handeware.com/learn

How to use it

  1. Print the sheet. The answer key comes out as its own page, so you can keep it back.
  2. Work for accuracy first. Once it is easy, time it and try to beat your time.
  3. Check with the key and redo any that were missed.
  4. For a fresh set of problems, pick version B or C above.

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