Free 2nd Grade Math Worksheets
Second grade turns beginning skills into real fluency. Students commit their addition and subtraction facts to memory, take on two-digit problems with regrouping — carrying and borrowing — and extend place value to the hundreds. These worksheets cover that whole arc, from fact review through multi-digit computation, each as a free PDF with an answer key.
Key Skills at This Level
- Fluent addition and subtraction facts within 20
- Two-digit addition with regrouping (carrying)
- Two-digit subtraction with regrouping (borrowing)
- Three-digit addition and subtraction
- Place value: hundreds, tens, and ones
- Checking subtraction with addition (fact families)
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# Place Value
The Year of Regrouping
Regrouping is the signature skill of second grade — and the first place many students wobble. Carrying a ten in 47 + 38, or trading a ten for ten ones in 52 − 38, only makes sense when place value is solid. These worksheets sequence the journey deliberately: fact-fluency review first, then two-digit problems without regrouping to build the layout habit, then regrouping itself, and finally three-digit problems that put it all together.
Fluency Is a 2nd Grade Standard
Knowing facts from memory — not just being able to work them out — is an explicit goal of second grade math. That is why fact sheets still belong on this page even though they were introduced in first grade: the difference is speed. A daily one-page drill, or a round of our free timed game, turns facts a student can find into facts a student simply knows.
Catching Mistakes Early
Second graders make wonderfully predictable errors: forgetting the carried ten, subtracting the smaller digit from the larger regardless of position, or misaligning columns. Because every worksheet ships with an answer key, you can spot the pattern in minutes and reteach the one step that needs it — long before the habit sets.
Frequently Asked Questions
What math should a 2nd grader know?
By the end of 2nd grade, students should know their addition and subtraction facts within 20 from memory, add and subtract within 100 using regrouping, understand hundreds, tens, and ones, and be working with numbers up to 1,000.
What is regrouping in 2nd grade math?
Regrouping means trading between place-value columns: carrying a ten when a column of an addition problem exceeds 9, or borrowing a ten when the top digit of a subtraction column is too small. It is the central new skill of 2nd grade arithmetic.
How can I help my 2nd grader with regrouping at home?
Use bundles of ten (straws, blocks, coins) to act out the trade physically, then connect it to the written steps. Start with problems that need no regrouping, add regrouping once the layout is automatic, and have your child check subtraction by adding back.