Prefixes, Root Words, Suffixes worksheet for students to complete sentences by adding appropriate prefixes or suffixes.

Task Overview:

The task involves completing sentences by adding appropriate prefixes or suffixes to the given words. The goal is to understand how prefixes and suffixes change the meaning of root words.

Solution with Explanations:

1. The kids were very ______happy when their soccer game was rained out.
- Answer: unhappy
- Explanation: The prefix "un-" means "not." Adding "un-" to "happy" creates "unhappy," which means not happy.

2. Mom had to ______heat the oven before she could bake the cake.
- Answer: pre-
- Explanation: The prefix "pre-" means "before." "Pre-heat" means to heat something beforehand.

3. I had to ______read the question so I could understand it.
- Answer: reread
- Explanation: The prefix "re-" means "again." "Reread" means to read something again.

4. The firefighter was fear______ as he ran into the burning house to save the family.
- Answer: fearless
- Explanation: The suffix "-less" means "without." "Fearless" means without fear.

5. We watched the fireworks ______plode in the night sky.
- Answer: explode
- Explanation: The prefix "ex-" means "out." "Explode" means to burst out suddenly.

6. We had to ______ware of snakes while we were hiking through the woods.
- Answer: beware
- Explanation: The prefix "be-" is used here to form a verb. "Beware" means to be cautious or watchful.

7. She was the young______ girl in the whole class.
- Answer: youngest
- Explanation: The suffix "-est" is used to form the superlative form of an adjective. "Youngest" means the most young.

8. The ground was complete______ covered with snow after the blizzard.
- Answer: completely
- Explanation: The suffix "-ly" is added to an adjective to form an adverb. "Completely" means fully or entirely.

9. The lights added a magic______ touch to the play.
- Answer: magical
- Explanation: The suffix "-al" is added to a noun to form an adjective. "Magical" means relating to magic.

10. Callie had to ______tie her shoes so she could take them off.
- Answer: untie
- Explanation: The prefix "un-" means "not" or "reverse." "Untie" means to undo the tying.

11. Our teacher told us to be care______ with the pottery we made.
- Answer: careful
- Explanation: The suffix "-ful" is added to a noun to form an adjective. "Careful" means showing care or caution.

12. The brown dog was small______ than the black dog.
- Answer: smaller
- Explanation: The suffix "-er" is used to form the comparative form of an adjective. "Smaller" means less big compared to something else.

13. The farm______ took the hay into the barn.
- Answer: farmer
- Explanation: The suffix "-er" is added to a noun to indicate a person who performs a specific action. "Farmer" means someone who works on a farm.

14. The boy was ______honest when he told the teacher he finished his work.
- Answer: dishonest
- Explanation: The prefix "dis-" means "not" or "opposite." "Dishonest" means not honest.

Final Answers:

1. unhappy
2. pre-
3. reread
4. fearless
5. explode
6. beware
7. youngest
8. completely
9. magical
10. untie
11. careful
12. smaller
13. farmer
14. dishonest

Boxed Final Answer:
\boxed{
\begin{array}{l}
1. \text{unhappy} \\
2. \text{pre-} \\
3. \text{reread} \\
4. \text{fearless} \\
5. \text{explode} \\
6. \text{beware} \\
7. \text{youngest} \\
8. \text{completely} \\
9. \text{magical} \\
10. \text{untie} \\
11. \text{careful} \\
12. \text{smaller} \\
13. \text{farmer} \\
14. \text{dishonest} \\
\end{array}
}