Addition Worksheets
Addition worksheets here span the full K-5 arc, starting with single-digit sums for kindergarten and 1st grade and building to 4-digit addition with regrouping by 4th and 5th grade. Special formats like make-ten and missing-addend problems target the number-sense strategies most Common Core curricula introduce before the standard algorithm. Choose a mode below based on the number of digits and whether regrouping (carrying) is involved.
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2-Digit With Regrouping Addition Worksheet
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2-Digit With Regrouping Addition Worksheet
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All worksheets in this section
Single-Digit Addition Worksheets
Kindergarten-1st grade
Free printable single-digit addition worksheets with answer keys. Practice sums to 18 with vertical problems perfect for kindergarten and 1st grade homeschool or classroom drills.
Open worksheet2-Digit Addition With Regrouping Worksheets
2nd grade
Free printable 2-digit addition with regrouping worksheets and answer keys. Step-by-step carrying practice for 2nd grade students learning to add double-digit numbers.
Open worksheet2-Digit Addition Without Regrouping Worksheets
1st-2nd grade
Free printable 2-digit addition without regrouping worksheets for 1st and 2nd grade. No-carry double-digit practice with answer keys, ideal for building place-value confidence.
Open worksheet3-Digit Addition Worksheets
2nd-3rd grade
Free printable 3-digit addition worksheets with and without regrouping. Practice adding hundreds, tens, and ones with answer keys for 2nd and 3rd grade students.
Open worksheetMake Ten Addition Worksheets
Kindergarten-1st grade
Free printable make-ten addition worksheets that teach the make-a-ten mental math strategy. Great for kindergarten and 1st grade students building number sense.
Open worksheetMissing Addend Worksheets
1st-2nd grade
Free printable missing addend worksheets for 1st and 2nd grade. Solve for an unknown number in an addition equation with answer keys included.
Open worksheetMixed Addition and Subtraction Worksheets
1st-3rd grade
Free printable mixed addition and subtraction worksheets with answer keys. Practice switching between operations for 1st through 3rd grade math review.
Open worksheetWhat these worksheets cover
This hub includes single-digit addition facts, 2-digit addition with and without regrouping, 3-digit and 4-digit addition, make-ten strategy problems, and missing-addend equations like 7 + __ = 12.
Both horizontal and vertical layouts are available, which matters because horizontal problems build mental math while vertical problems reinforce the column-based standard algorithm.
How to use these at home or in class
Introduce regrouping only after a child is fast and accurate with no-regrouping problems of the same digit length, since carrying adds an extra step that is easier to learn once the base skill is automatic.
Missing-addend worksheets are especially useful right before subtraction is introduced, since they build the inverse-relationship thinking subtraction depends on.
Skill progression by grade
Kindergarten focuses on addition within 10 using objects or pictures; 1st grade adds addition within 20 and introduces the make-ten strategy; 2nd grade covers 2-digit addition with regrouping.
3rd grade extends to 3-digit addition, and 4th and 5th grade practice 4-digit addition and multi-step problems that combine addition with other operations.
How to teach addition facts and multi-digit addition with regrouping
- 1
Start with single-digit facts
Confirm a child can add any two single-digit numbers accurately before introducing multi-digit problems.
- 2
Add place value with no-regrouping problems
Practice 2-digit addition without carrying to build comfort with column alignment first.
- 3
Introduce regrouping gradually
Move to 2-digit-regrouping mode once column addition is solid, and talk through the carrying step out loud.
- 4
Layer in make-ten strategy
Use make-ten mode to build the mental math shortcut of combining numbers to 10 before adding the remainder.
- 5
Scale up digit length
Progress to 3-digit and then 4-digit addition only after the same regrouping pattern is mastered at the smaller size.
Tips for parents and teachers
- Say each carried digit out loud during vertical addition practice so the process stays visible, not just mechanical.
- Use horizontal layout for quick warm-up problems and vertical layout for problems involving regrouping.
- Mix in one or two missing-addend problems even during a regular addition unit to keep flexible thinking active.
- Praise the strategy a child uses, not just the correct answer, especially with make-ten problems.
Related worksheets
Math Worksheets for K-5
Grades K-5
Free printable math worksheets for kindergarten through 5th grade, covering addition, subtraction, multiplication, division, fractions, and telling time with answer keys.
Open worksheetSubtraction Worksheets
Grades K-5
Printable subtraction worksheets covering single-digit facts, borrowing, and 3-4 digit subtraction for kindergarten through 5th grade, with answer keys.
Open worksheetMultiplication Worksheets
Grades 2-5
Printable multiplication worksheets from times tables to multi-digit multiplication for grades 2-5, with drills, mixed practice, and answer keys included.
Open worksheet1st Grade Math Worksheets
1st grade
Free printable 1st grade math worksheets covering addition, subtraction within 20, and telling time to the half hour, with answer keys included.
Open worksheet2nd Grade Math Worksheets
2nd grade
Free printable 2nd grade math worksheets for regrouping addition and subtraction, place value, and telling time to five minutes, with answer keys.
Open worksheet3rd Grade Math Worksheets
3rd grade
Free printable 3rd grade math worksheets for multiplication tables, division facts, and basic fractions, with answer keys for daily practice.
Open worksheetFrequently asked questions
When should kids learn addition with regrouping?
Most students learn 2-digit addition with regrouping in 2nd grade, after mastering addition without regrouping.
What is the make-ten strategy in addition?
Make-ten is a mental math strategy where a child breaks apart one addend to combine part of it with the other addend to reach 10, then adds the remainder, such as solving 8 + 5 as 8 + 2 + 3.
What are missing-addend problems used for?
Missing-addend problems, like 6 + __ = 10, build the inverse-relationship thinking that supports subtraction and algebra readiness.
How many digits of addition should a 4th grader practice?
4th graders typically practice 3-digit and 4-digit addition with regrouping as they build toward multi-step word problems.
Is horizontal or vertical addition better for practice?
Horizontal layout builds mental math and number sense, while vertical layout reinforces the standard column algorithm used on most tests.
Can I print addition worksheets for timed practice?
Yes, single-digit facts worksheets on this hub work well as timed daily drills to build automatic recall.
Do these addition worksheets come with answer keys?
Yes, every generated addition worksheet includes a matching answer key for quick grading.