Grade 3 worksheet on writing sentences with prefixes and suffixes to demonstrate word meaning changes.

Problem Explanation:

The task involves writing sentences using the given root words and then writing additional sentences using those same words with prefixes or suffixes added. The goal is to demonstrate how prefixes and suffixes change the meaning of words.

Solution:

#### 1. Active
- Root Word Sentence: The athlete was very active during the competition.
- Prefix/Suffix Sentence: The inactive participant sat on the sidelines watching others play.

#### 2. Inactive
- Root Word Sentence: The team member was inactive in the meeting, not contributing any ideas.
- Prefix/Suffix Sentence: The active speaker kept everyone engaged throughout the presentation.

#### 3. Trust
- Root Word Sentence: I trust my friend to keep my secrets safe.
- Prefix/Suffix Sentence: After the betrayal, she developed a distrust for her colleagues.

#### 4. Distrust
- Root Word Sentence: Her distrust in the system made it hard for her to believe the news.
- Prefix/Suffix Sentence: He trusted his instincts when making important decisions.

#### 5. Cancel
- Root Word Sentence: The event was canceled due to bad weather.
- Prefix/Suffix Sentence: The cancellation notice arrived just before the scheduled start time.

#### 6. Cancellation
- Root Word Sentence: The airline issued a cancellation fee for changing the flight plan.
- Prefix/Suffix Sentence: She decided to cancel her subscription to the service.

#### 7. End
- Root Word Sentence: The movie ended with a cliffhanger, leaving viewers wanting more.
- Prefix/Suffix Sentence: The endless journey seemed to have no conclusion.

#### 8. Endless
- Root Word Sentence: The endless desert stretched as far as the eye could see.
- Prefix/Suffix Sentence: The story had an end that tied up all the loose ends.

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Explanation of Prefixes and Suffixes:

- Prefixes are added at the beginning of a word to change its meaning. For example:
- "In-" in "inactive" means "not," so "inactive" means "not active."
- "Dis-" in "distrust" means "lack of," so "distrust" means "lack of trust."

- Suffixes are added at the end of a word to change its meaning or part of speech. For example:
- "-ion" in "cancellation" turns the verb "cancel" into a noun meaning "the act of canceling."
- "-less" in "endless" means "without," so "endless" means "without an end."

Final Answer:

\boxed{
\begin{aligned}
&\text{1. Active: The athlete was very active during the competition.} \\
&\text{ Inactive: The inactive participant sat on the sidelines watching others play.} \\
&\text{2. Trust: I trust my friend to keep my secrets safe.} \\
&\text{ Distrust: After the betrayal, she developed a distrust for her colleagues.} \\
&\text{3. Cancel: The event was canceled due to bad weather.} \\
&\text{ Cancellation: The cancellation notice arrived just before the scheduled start time.} \\
&\text{4. End: The movie ended with a cliffhanger, leaving viewers wanting more.} \\
&\text{ Endless: The endless desert stretched as far as the eye could see.} \\
\end{aligned}
}