Three-digit addition & subtraction worksheets
Third graders are expected to add and subtract within 1000 fluently, regrouping included. These sheets alternate the two operations so your child reads each sign instead of running on autopilot, the exact skill mixed-operation tests check.
By grade
What students need to know
Check the sign first, then work one column at a time starting from the ones.
This skill runs from 2nd grade through 3rd grade. Pick a grade above for level-matched sentences, teaching notes, and worksheets.
Three-digit addition & subtraction across the grades
2nd grade
Second graders extend column addition and subtraction to three-digit numbers within 1000. The steps are the same ones they know from two-digit work. The sheets just add a hundreds column and mix addition with subtraction so the sign matters.
3rd grade
Third graders are expected to add and subtract within 1000 fluently, regrouping included. These sheets alternate the two operations so your child reads each sign instead of running on autopilot, the exact skill mixed-operation tests check.
All addition & subtraction worksheets →
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