3rd Grade Suffixes: -ful, -less, -ly, -ness, -ment Worksheet — Level 3 — Practice Set 3 — Answers
Answer sheet with model answers and success criteria for the 3rd Grade spelling patterns & rules worksheet.
Success TutoringWorksheetsAnswer sheet3rd Grade · English · Spelling Patterns & Rules3rd Grade Suffixes: -ful, -less, -ly, -ness, -ment Worksheet — Level 3 — Practice Set 3 — Answers
Add the suffix. Watch out: if the word ends in a consonant and y, change the y to i first.
Answer: laziness
Change the y to i, then add the suffix.
Answer: silliness
Change the y to i, then add the suffix.
Answer: penniless
Change the y to i, then add the suffix.
Answer: spotless
Just add the suffix to the end of the word.
Answer: happily
Change the y to i, then add the suffix.
Answer: pitiful
Change the y to i, then add the suffix.
Answer: emptiness
Change the y to i, then add the suffix.
Answer: merciless
Change the y to i, then add the suffix.
Answer: hopeful
Just add the suffix to the end of the word.
Answer: beautiful
Change the y to i, then add the suffix.
Answer: sleepless
Just add the suffix to the end of the word.
Answer: argument
Drop the e before adding -ment (a word to learn by heart).
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.