Grade 3 Addition Worksheets
Grade 3 addition covers three-digit column addition with regrouping in more than one place. The six sheets below take that work in six formats, and each comes in three versions with its own answer key.
What the grade 3 addition sheets cover
Grade 3 addition comes in six formats (problem counts in brackets): drill (30, straight practice), timed drill (72, timed fluency), missing number (24, find the blank), mixed review (30, mixed shapes), word problems (10, stories), and vertical format (20, column work). Set A uses numbers from 3 to 1,787, 99 column problems that regroup, and 24 fill-in blanks. Problem types: three-digit addition with regrouping, addition facts within 20, and adding two-digit numbers mentally, plus one more. All six come as Sets A, B and C with answer keys, 186 problems per set from 10 to 72 a sheet. From the Set A drill, problem 11: "820 + 339" (answer 1159). Common Core: 2.OA.2 and 3.NBT.2.
Teaching notes: How to Teach Addition. Set other grade 3 addition ranges in the worksheet generator.
Grade 3 Addition Drill
Straight practice, 20-40 problems.
Grade 3 Addition Timed Drill
Fact fluency, 50-100 problems, timer box on sheet.
Grade 3 Addition Missing Number
Solve for the blank in any position.
Grade 3 Addition Mixed Review
Assorted problem shapes from the operation.
Grade 3 Addition Word Problems
Story problems in real-world contexts.
Grade 3 Three-Digit Addition with Regrouping
Column arithmetic with regrouping lines.
The drill has 30 problems, 30 of them regrouping (problem 11: "820 + 339"). The timed drill has 72 problems, 36 of them regrouping (problem 25: "14 + 5"). The missing number has 24 problems, numbers to 1,787 (problem 9: "876 + 783 = ___"). The mixed review has 30 problems, thirteen of them regrouping (problem 11: "24 + 27 + 52 + 20"). The word problems has 10 problems, story problems (problem 4: "The bakery sold 93 muffins on Friday and 172 muffins on…"). The vertical format has 20 problems, twenty of them regrouping (problem 7: "685 + 822").
Across the six sheets the generator draws on three-digit addition with regrouping, addition facts within 20, adding two-digit numbers mentally, and adding four two-digit numbers. The pages are tagged to Common Core 3.NBT.2 and 2.OA.2, and each tag links to the standards index.
Addition continues at kindergarten, grade 1, grade 2, and grade 4, so a student who finishes the grade 3 sheets can move up without changing topic.
Treat the three versions of each grade 3 addition sheet as a week: Set A on Monday to find the gaps, Set B midweek after the fix, Set C at the end as the check that it held — 186 problems per set across the row.