🧮 Three-Digit Addition

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Date:

Solve each problem. Line up the digits by place value.

1.
464
+ 480

2.
168
+ 114

3.
333
+ 285

4.
312
+ 307

5.
169
+ 464

6.
377
+ 486

7.
282
+ 693

8.
292
+ 210

9.
180
+ 480

10.
166
+ 260

11.
515
+ 473

12.
599
+ 257

13.
412
+ 568

14.
177
+ 779

15.
589
+ 232

Answer key: 1. 944 · 2. 282 · 3. 618 · 4. 619 · 5. 633 · 6. 863 · 7. 975 · 8. 502 · 9. 660 · 10. 426 · 11. 988 · 12. 856 · 13. 980 · 14. 956 · 15. 821

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Worksheets › Grade 2 › Numbers & maths

Grade 2 (ages 7–8)Numbers & mathsFree printable PDF

About this grade 2 worksheet

Free 2nd grade worksheet: 15 three-digit addition problems within 1,000, some with regrouping, with answer key. Skill: Adding within 1,000. Level: Grade 2 — also suits Year 3 (UK).

For teachers: skills & standards

CCSS 2.NBT.B.7: Add and subtract within 1,000
Works as a morning-work page, a centre/station activity, homework or an early-finisher task.

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What age is it for?

It is designed for Grade 2 (ages 7–8), but use it with any child who is ready.

What skills does it build?

Adding within 1,000.

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