Grade 1 Addition Worksheets
The grade 1 addition sequence is about fact fluency within 20, three addends, and two-digit plus one-digit numbers, and these six sheets cover it format by format, three versions each.
What the grade 1 addition sheets cover
Grade 1 addition comes in six formats (problem counts in brackets): drill (18, straight practice), timed drill (60, timed fluency), missing number (24, find the blank), mixed review (22, mixed shapes), word problems (22, stories), and vertical format (22, column work). Set A uses numbers from 1 to 91, 26 column problems that regroup, and 24 fill-in blanks. Problem types: sums within 20, doubles facts, and adding multiples of ten, plus one more. All six come as Sets A, B and C with answer keys, 168 problems per set from 18 to 60 a sheet. From the Set A drill, problem 7: "8 + 18" (answer 26). Common Core: 1.NBT.4, 1.OA.1, 1.OA.2, and 1.OA.6.
Teaching notes: How to Teach Addition. Set other grade 1 addition ranges in the worksheet generator.
Grade 1 Addition Practice
Straight practice, 20-40 problems.
Grade 1 Addition Timed Drill
Fact fluency, 50-100 problems, timer box on sheet.
Grade 1 Addition Missing Number
Solve for the blank in any position.
Adding Three Numbers — Grade 1 Word Problems
Assorted problem shapes from the operation.
Adding Up: Grade 1 Word Problems Within 20
Story problems in real-world contexts.
1.NBT.4 — Adding Within 100: Two-Digit & One-Digit Numbers
Column arithmetic with regrouping lines.
The drill has 18 problems, seven of them regrouping (problem 7: "8 + 18"). The timed drill has 60 problems, seventeen of them regrouping (problem 21: "22 + 30"). The missing number has 24 problems, numbers to 89 (problem 9: "___ + 17 = 20"). The mixed review has 22 problems, story problems (problem 8: "Tom has 2 toy cars, 8 toy trucks, and 4 toy trains. How…"). The word problems has 22 problems, story problems (problem 8: "Maya read 4 books last week and 9 books this week. How many…"). The vertical format has 22 problems, two of them regrouping (problem 8: "15 + 7").
Across the six sheets the generator draws on sums within 20, doubles facts, adding multiples of ten, and two-digit plus one-digit within 100. The pages are tagged to Common Core 1.OA.6, 1.OA.2, 1.OA.1, and 1.NBT.4, and each tag links to the standards index.
Addition continues at kindergarten, grade 2, grade 3, and grade 4, so a student who finishes the grade 1 sheets can move up without changing topic.
Treat the three versions of each grade 1 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 — 168 problems per set across the row.