Commas in a Series Practice Worksheet — Grade 3

This worksheet gives Grade 3 students focused practice with one of the most useful comma rules in writing: separating three or more items in a list. Knowing where to place commas in a series helps readers follow a list without confusion, and the serial comma — the comma placed right before the word 'and' — is an important part of that pattern. The sheet is organized into three parts that build on each other. Students start by finding listed items in correctly punctuated sentences, then fill in a missing word to complete a series, and finally rewrite sentences where commas have been left out. The rule box at the top states the pattern clearly and gives an example students can refer back to as they work through each section. Print one copy per student and encourage them to say each list aloud before writing.