What does mastery look like?

Correct use in writing without prompting: a summarized chapter, an effective argument. Spelling that shows up inside real sentences has finished the journey.

What related suffixes come next?

-ion turns many of these verbs into nouns (organize, organization), connecting this page to the -tion page. The suffix grid is one system, met a page at a time.

6th grade suffixes -ive and -ize

6th grade suffixes -ive and -ize worksheets

Sixth graders read and spell both families automatically and treat the pair as a word-building system, learning by real examples which bases accept which suffix, the knowledge these sheets are built to supply.

Free printable PDF worksheet, aligned to Common Core L.6.4.b.

Each print is a different sheet with its own answer key. You don't need to sign up.

The kind of words you'll complete and sort

Fill in the missing letters to make a real word, then write the whole word in its column.

equalvisualpositinventnatmodern

Columns: -ive and -ize. Only ive turns "posit_" into a real word, so positive goes under -ive; Only ize turns "modern_" into a real word, so modernize goes under -ize.

Every print pulls a new set of words at this level, so a make-up test or a second sibling gets a different mix.

What's on a 6th grade sheet

6th grade sheets draw from 22 words, 14 to a page. 5th and 6th grade print from the same 22 words. The teaching notes below are written for this grade.

Some of the words:

creativenegativeexpensiveattractivefestiveapologizerecognizeenergizesummarizeequalize

Complete and sort. Fill in the missing letters to make a real word, then write the whole word in its column. 14 words per page.

Every version prints on US Letter or A4, with its answer key on the last page.

How to teach this

Move to production: have your child write one sentence using an -ive and an -ize word about their day. Used words outrank sorted words, and this family is ready for real use.

Watch for: These suffixes have different JOBS, not just different letters: -ive words describe (an active dog), -ize words act (to apologize). Sorting by job is the deeper sort hiding inside the spelling sort. The buried base word is the meaning key: expensive hides expense, memorize hides memory. Excavating the base turns each word from vocabulary into sense.

Common questions about 6th grade suffixes -ive and -ize

What does mastery look like?: Correct use in writing without prompting: a summarized chapter, an effective argument. Spelling that shows up inside real sentences has finished the journey.
What related suffixes come next?: -ion turns many of these verbs into nouns (organize, organization), connecting this page to the -tion page. The suffix grid is one system, met a page at a time.

Related worksheets

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Aligned to Common Core L.6.4.b. Reviewed by the One more sheet team. Content version 241, updated August 2026.

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