15Free Addition Worksheets for Grade 2, From Facts to 3-Digit Regrouping

Fifteen free 2nd grade addition worksheets in the order we would use them. Start by making facts within 20 automatic, then move to two-digit addition with regrouping, first on its own and then mixed in with problems that do not need it. From there come missing numbers and word problems, adding three and four numbers at once, and finally three-digit addition within 1000, from mental math with tens and hundreds up to regrouping twice in one problem.

In this roundup

The full list

  1. Addition Within 20 Quick Practice Worksheet for Grade 2
  2. Timed Addition Within 20 Worksheet for 2nd Grade
  3. 2nd Grade Addition Worksheet: Two-Digit With Regrouping
  4. Horizontal Two-Digit Addition Worksheet for Grade 2
  5. Mixed Two-Digit Addition Worksheet for 2nd Grade
  6. Missing Number Addition Worksheet for 2nd Grade
  7. Addition Word Problems Within 100 Worksheet for Grade 2
  8. Add Three Two-Digit Numbers Worksheet for Grade 2
  9. Add Four Two-Digit Numbers Worksheet for 2nd Grade
  10. Add 10 and Add 100 Mental Math Worksheet for 2nd Grade
  11. Mental Math Addition Within 1000 Worksheet for Grade 2
  12. 3-Digit Addition Without Regrouping: Grade 2 Worksheet
  13. Horizontal Three-Digit Addition Worksheet for Grade 2
  14. Color-Coded Place Value Addition Worksheet for Grade 2
  15. 3-Digit Addition With Regrouping Worksheet for 2nd Grade

The set follows the second grade Common Core addition standards in order. Fluency within 20 is 2.OA.2, two-digit addition and missing numbers are 2.NBT.5, word problems are 2.OA.1, adding up to four two-digit numbers is 2.NBT.6, and adding 10 or 100 and three-digit addition within 1000 are 2.NBT.8 and 2.NBT.7.

If a child gets stuck partway through, the fix is almost always one step back. Trouble with two-digit regrouping usually means the facts within 20 are not automatic yet, and trouble with three digits usually means place value needs another look with sheets 10 and 11.

Nine of the fifteen are plain black on white and download as true vector PDFs, so they print sharp and are light on ink for a class set. The other six are in color.

01

Addition Within 20 Quick Practice Worksheet for Grade 2

Facts within 20 · 5 minutes · Grade 2
Addition Within 20 Quick Practice Worksheet for Grade 2 worksheet preview

Thirty one-digit problems in columns, and every sum lands between 10 and 18. A time box and a score out of 30 sit at the top.

Why it goes first Crossing 10 is where children slow down, and every two-digit problem later in the set leans on it. Five minutes a day here pays off on every sheet that follows.
02

Timed Addition Within 20 Worksheet for 2nd Grade

Facts within 20 · 10 minutes · Grade 2
Timed Addition Within 20 Worksheet for 2nd Grade worksheet preview

Forty-eight problems within 20 written across, with spaces for the time taken and a score out of 48.

How to use it Time it once, keep the sheet, and try again in two weeks. Second grade is when these sums are meant to come from memory, and beating your own time is the best motivation there is.
03

2nd Grade Addition Worksheet: Two-Digit With Regrouping

Two-digit addition · 20 minutes · Grade 2
2nd Grade Addition Worksheet: Two-Digit With Regrouping worksheet preview

Twenty two-digit problems in columns, and every one regroups. All the sums stay under 100.

Why it comes here With regrouping on every problem, there is nothing to decide, so all the attention goes on the carry itself: ten ones become one ten, and the 1 goes on top of the tens column.
04

Horizontal Two-Digit Addition Worksheet for Grade 2

Two-digit addition · 20 minutes · Grade 2
Horizontal Two-Digit Addition Worksheet for Grade 2 worksheet preview

The same skill written across the page. Twenty problems, every one regrouping, with sums from 44 to 97.

What to watch for Some children rewrite each one in columns and some add tens then ones in their head. Either is fine, and which one a child chooses tells you how comfortable they are with place value.
05

Mixed Two-Digit Addition Worksheet for 2nd Grade

Two-digit addition · 20 minutes · Grade 2
Mixed Two-Digit Addition Worksheet for 2nd Grade worksheet preview

Twenty-four problems, exactly half needing regrouping and half not, shuffled together.

The real test A child who regroups everywhere, or nowhere, is following a habit instead of reading the numbers. This is the sheet that shows whether regrouping has actually clicked.
06

Missing Number Addition Worksheet for 2nd Grade

Thinking backward · 15 minutes · Grade 2
Missing Number Addition Worksheet for 2nd Grade worksheet preview

Sixteen number sentences within 100 with a box for the missing number. Usually it is an addend, and four times it is the sum.

Why it works A missing addend is subtraction in disguise, and counting up from the number you have is often the easiest way in. None of the problems regroup, so the thinking gets all the attention.
07

Addition Word Problems Within 100 Worksheet for Grade 2

Word problems · 20 minutes · Grade 2
Addition Word Problems Within 100 Worksheet for Grade 2 worksheet preview

Six short story problems within 100 with room to show the work. One adds three numbers and one starts with an unknown amount.

Watch for Problem 4 begins with Ava having some crayons. Working out what plus 15 makes 52 uses exactly the thinking from the missing number sheet, so the two make a good pair.
08

Add Three Two-Digit Numbers Worksheet for Grade 2

Adding several numbers · 20 minutes · Grade 2
Add Three Two-Digit Numbers Worksheet for Grade 2 worksheet preview

Twelve problems adding three two-digit numbers, with a tip to look for ones digits that make 10.

The strategy Pairing up ones that make 10 turns a long column into an easy one. Two of the problems carry a 2 into the tens, which is new and worth pointing out first.
09

Add Four Two-Digit Numbers Worksheet for 2nd Grade

Adding several numbers · 20 minutes · Grade 2
Add Four Two-Digit Numbers Worksheet for 2nd Grade worksheet preview

Twelve problems adding four two-digit numbers, with every sum under 100.

Why it follows Four numbers is the most second grade asks a child to add at once. The make-10 habit from the previous sheet does even more work here.
10

Add 10 and Add 100 Mental Math Worksheet for 2nd Grade

Into the hundreds · 10 minutes · Grade 2
Add 10 and Add 100 Mental Math Worksheet for 2nd Grade worksheet preview

Ten three-digit numbers in a table. Add 10 to each, then add 100, with a worked example at the top.

Why it opens three digits Seeing that adding 10 changes only the tens digit, and adding 100 only the hundreds, is the place value idea every three-digit sheet after this depends on.
11

Mental Math Addition Within 1000 Worksheet for Grade 2

Into the hundreds · 15 minutes · Grade 2
Mental Math Addition Within 1000 Worksheet for Grade 2 worksheet preview

Twenty mental math problems adding hundreds and tens within 1000, like 420 + 30 and 245 + 300.

The interesting part A few problems add tens to tens and cross 100, and 380 + 20 lands exactly on 400. A child who sees those without writing anything down really understands place value.
12

3-Digit Addition Without Regrouping: Grade 2 Worksheet

Three-digit addition · 15 minutes · Grade 2
3-Digit Addition Without Regrouping: Grade 2 Worksheet worksheet preview

Twenty three-digit problems in columns, none of which need regrouping.

Why it comes here The only new thing is the hundreds column. Getting the layout right before regrouping comes back makes the last two sheets far less of a jump.
13

Horizontal Three-Digit Addition Worksheet for Grade 2

Three-digit addition · 15 minutes · Grade 2
Horizontal Three-Digit Addition Worksheet for Grade 2 worksheet preview

Twenty three-digit addition sentences written across the page, again with no regrouping.

Best for Adding hundreds, tens and ones separately in your head. It ties the mental math from sheets 10 and 11 to the column method from sheet 12.
14

Color-Coded Place Value Addition Worksheet for Grade 2

Three-digit regrouping · 20 minutes · Grade 2
Color-Coded Place Value Addition Worksheet for Grade 2 worksheet preview

Nine three-digit problems on a color-coded grid: blue hundreds, green tens and yellow ones. Some regroup once and three regroup twice.

Why it works The colors show exactly which column the regrouped 1 moves into, which is the usual place things go wrong with three digits.
15

3-Digit Addition With Regrouping Worksheet for 2nd Grade

Three-digit regrouping · 25 minutes · Grade 2
3-Digit Addition With Regrouping Worksheet for 2nd Grade worksheet preview

Twenty three-digit problems that all regroup at least once, including four that add a two-digit number to a three-digit one.

Why it ends the set No color, no hints, and numbers of different lengths to line up. It is the sheet that shows a child can do three-digit addition on their own.

One more thing.

If your kids finish a unit and you're not sure what to do next, our honest advice: don't move on yet. Spend a week mixing these in as warm-ups. Fluency isn't a unit, it's a habit, and the sheet that builds it is usually the one they ask to do again.

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