16 questions
6th - 6th Grade
Mathematics
This free Grade 6 mathematics worksheet helps students identify factors, determine common factors, and find the greatest common factor (GCF) of pairs of whole numbers. Across 16 items, students recall what GCF means, list all factors of numbers such as 12, 24, and 25, identify whether a number is a factor, and determine the GCF of pairs including 14 and 35, 16 and 24, and 18 and 36. The worksheet combines 10 multiple-choice questions with 6 fill-in-the-blank items. Students must recognize complete factor lists, distinguish common factors from factors of only one number, and record common factors in least-to-greatest order when requested. It is a free printable worksheet with a complete answer key, suitable for Grade 6 math practice, independent work, review, or a quick check of students’ understanding of factors and GCF.
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WorksheetsAnswer Key7
1
Greatest Common Factor
12, 24, 3, 4, 2, 8, 6, 1
8
This worksheet builds GCF skills through 10 multiple-choice and 6 fill-in-the-blank questions. Students list factors of numbers such as 12, 24, and 25, identify common factors of number pairs, determine the greatest one, and record common factors in least-to-greatest order when required.
Begin by reviewing how to generate a complete factor list for one number, then have students compare the lists for pairs such as 12 and 20 or 16 and 24. Use the multiple-choice items to discuss why an incomplete factor list or a factor shared by only one number is not sufficient, and follow with the fill-in-the-blank GCF items for independent practice.
Students may leave out 1 or another factor when listing factors, select a number that is a factor of only one value, or choose a common factor without selecting the greatest one. Also check that fill-in responses list the common factors in the requested least-to-greatest order and use commas as directed.
The worksheet is available as a printable PDF and as a digital quiz on Wayground, and it includes a complete answer key for checking the factor lists, common factors, and GCF responses. Printable submissions can be graded by scanning student work with the Wayground for Teachers app.
In the worksheet’s Advanced Settings, adjust font spacing or choose a larger font size to make the factor-list and fill-in items easier to read. You can also apply a dyslexia-friendly font or translate the worksheet into another language while keeping the factors and GCF practice intact.
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