Printable Suffixes (-ful, -less) Worksheet | Grade 3 ELA

Mastering Suffixes: A Grade 3 Worksheet

This worksheet provides targeted practice for Grade 3 students learning to use the common suffixes "-ful" and "-less." Through two distinct activities, students will identify words with these suffixes and build new words from root words, reinforcing their understanding of how affixes change word meaning.

At a Glance

• Grade: 3 · Subject: ELA / Language
• Standard: CCSS.ELA-LITERACY.L.3.4.b — Determine the meaning of a new word when a known affix is added.
• Skill Focus: Suffixes -ful and -less
• Format: 1 page · 17 problems · Answer key included · PDF
• Best For: Independent practice, centers, or homework
• Time: 10–15 minutes

What's Inside

This single-page PDF contains two exercises to build vocabulary skills. First, students are presented with a word bank and must circle words containing the suffixes "-ful" and "-less." Second, students complete a matching activity, adding the correct suffix to a root word and connecting it to its definition. A full answer key is included for easy grading.

A Structured Approach to Skill Building

This worksheet follows a clear, gradual-release model:

• Guided Practice: The sheet begins with clear definitions of "-ful" (full of something) and "-less" (without something) to anchor the tasks.
• Supported Practice: Students identify 12 words from a list, applying the definitions in a recognition-based activity.
• Independent Practice: The final 5-problem matching task requires students to construct new words and determine their meaning, demonstrating comprehension.

This structure ensures students move from understanding to application.

Standards Alignment for Your Lesson Plans

This resource is directly aligned with Common Core standard CCSS.ELA-LITERACY.L.3.4.b, which expects students to "Determine the meaning of the new word formed when a known affix is added to a known word." The exercises provide focused practice on this specific language skill. Both standard codes can be copied directly into lesson plans, IEP goals, or district curriculum mapping tools.

How to Use It in Your Classroom

Use this worksheet as independent practice after a mini-lesson on suffixes. For formative assessment, observe which words students struggle to identify in the first part, indicating a need for more examples. It is also an effective tool for a literacy center rotation or as a quick homework assignment. Most students will complete the worksheet in 10-15 minutes.

Who It's For

This worksheet is designed for 3rd-grade students but can serve as a review for 4th graders or an advanced challenge for 2nd graders. It is ideal for general education classrooms, resource settings, and for homeschool parents looking for standards-aligned materials. Pair this activity with an anchor chart displaying common root words and their suffixed forms.

This worksheet supports vocabulary acquisition as outlined in CCSS.ELA-LITERACY.L.3.4.b, focusing on determining the meaning of new words formed with known affixes. By practicing with "-ful" and "-less," students develop morphological awareness, a key component of reading comprehension. Research highlights the strong correlation between morphological skills and literacy outcomes. The RAND AIRS 2024 report confirms that explicit instruction in word parts, such as that provided in this targeted activity, is a high-impact strategy for building a robust vocabulary. The 17 problems here offer a concise, effective dose of this critical practice, preparing students to decode unfamiliar words encountered during independent reading.