Two-digit addition worksheets
Second graders add within 100 fluently, and that means regrouping: most problems on these sheets carry a ten from the ones column. Your child writes the carry above the line and adds column by column.
By grade
What students need to know
Add the ones first. If they make ten or more, carry a ten to the tens column.
This skill runs from 1st grade through 2nd grade. Pick a grade above for level-matched sentences, teaching notes, and worksheets.
Two-digit addition across the grades
1st grade
First graders add two-digit numbers without regrouping: ones with ones, tens with tens. Keeping the columns straight is the whole game at this stage, and the stacked layout makes it visible.
2nd grade
Second graders add within 100 fluently, and that means regrouping: most problems on these sheets carry a ten from the ones column. Your child writes the carry above the line and adds column by column.
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