Prefixes un- and dis- | 1st grade, 2nd grade, 3rd grade Reading ... - Free Printable

Task Explanation:

The task requires you to add the correct prefix (`un-` or `dis-`) to each root word to form a new word. The prefixes change the meaning of the root words, often creating their opposites.

Solution:

#### Prefixes Explained:
- `un-`: This prefix is commonly used with adjectives and nouns to indicate the opposite or lack of something.
- `dis-`: This prefix is often used with verbs and some adjectives to indicate separation, negation, or reversal.

#### Step-by-Step Solution:

1. load → unload
- Meaning: To remove a load from something.
- Prefix: `un-`

2. happy → unhappy
- Meaning: Not happy; sad.
- Prefix: `un-`

3. comfort → discomfort
- Meaning: Lack of comfort; unease.
- Prefix: `dis-`

4. continue → discontinue
- Meaning: To stop continuing; to end.
- Prefix: `dis-`

5. friendly → unfriendly
- Meaning: Not friendly; hostile.
- Prefix: `un-`

6. allow → disallow
- Meaning: To not allow; to prohibit.
- Prefix: `dis-`

7. fair → unfair
- Meaning: Not fair; unjust.
- Prefix: `un-`

8. obey → disobey
- Meaning: To not obey; to refuse to follow orders.
- Prefix: `dis-`

9. respect → disrespect
- Meaning: Lack of respect; showing no regard.
- Prefix: `dis-`

10. tie → untie
- Meaning: To loosen or undo a tie.
- Prefix: `un-`

11. agree → disagree
- Meaning: To not agree; to have a different opinion.
- Prefix: `dis-`

12. trust → distrust
- Meaning: Lack of trust; suspicion.
- Prefix: `dis-`

13. order → disorder
- Meaning: Lack of order; chaos.
- Prefix: `dis-`

14. ripe → unripe
- Meaning: Not ripe; immature.
- Prefix: `un-`

15. comfortable → uncomfortable
- Meaning: Not comfortable; uneasy.
- Prefix: `un-`

16. honest → dishonest
- Meaning: Not honest; deceitful.
- Prefix: `dis-`

17. pleasant → unpleasant
- Meaning: Not pleasant; disagreeable.
- Prefix: `un-`

18. zip → unzip
- Meaning: To open a zipper.
- Prefix: `un-`

19. known → unknown
- Meaning: Not known; mysterious.
- Prefix: `un-`

20. sure → unsure
- Meaning: Not sure; doubtful.
- Prefix: `un-`

Final Answer:

```
1. unload
2. unhappy
3. discomfort
4. discontinue
5. unfriendly
6. disallow
7. unfair
8. disobey
9. disrespect
10. untie
11. disagree
12. distrust
13. disorder
14. unripe
15. uncomfortable
16. dishonest
17. unpleasant
18. unzip
19. unknown
20. unsure
```

Explanation:

- Words like "happy," "fair," "comfortable," etc., use `un-` because they are adjectives describing states or qualities.
- Words like "continue," "obey," "allow," etc., use `dis-` because they are verbs or describe actions.
- Some words, like "zip" and "tie," use `un-` because they involve reversing an action (e.g., opening a zipper or loosening a tie).

This approach ensures that the prefixes are used correctly based on the part of speech and the intended meaning.