Use this "Fill in the Prefixes" worksheet to help students practice combining common prefixes like "un-" and "re-" with root words to build vocabulary.

Task Overview:

The task is to fill in the blanks with appropriate prefixes from the given bank of prefixes. The prefixes provided are:

- de-
- dis-
- ex-
- il-
- im-
- in-
- mis-
- non-
- pre-
- re-
- un-
- with-

Each word in the table needs a prefix to form a valid English word. Some words may have more than one correct answer.

---

Solution:

#### Row 1:
1. fix:
- Prefix: re- (refix) or un- (unfix)
- Valid words: refix, unfix

2. sense:
- Prefix: mis- (mis-sense)
- Valid word: mis-sense

3. happy:
- Prefix: un- (un-happy)
- Valid word: unhappy

#### Row 2:
4. mind:
- Prefix: pre- (pre-mind)
- Valid word: pre-mind

5. pert:
- Prefix: im- (im-pert)
- Valid word: impertinent

6. respect:
- Prefix: dis- (dis-respect)
- Valid word: disrespect

#### Row 3:
7. equal:
- Prefix: une- (unequal)
- Valid word: unequal

8. legal:
- Prefix: il- (il-legal)
- Valid word: illegal

9. fiction:
- Prefix: non- (non-fiction)
- Valid word: non-fiction

#### Row 4:
10. prove:
- Prefix: re- (re-prove)
- Valid word: reprove

11. frost:
- Prefix: pre- (pre-frost)
- Valid word: prefrost

12. ceed:
- Prefix: pro- (pro-ceed)
- Valid word: proceed

#### Row 5:
13. lucky:
- Prefix: un- (un-lucky)
- Valid word: unlucky

14. lead:
- Prefix: mis- (mis-lead)
- Valid word: mislead

15. fat:
- Prefix: over- (over-fat)
- Valid word: overfat

#### Row 6:
16. fair:
- Prefix: un- (un-fair)
- Valid word: unfair

17. gust:
- Prefix: mis- (mis-gust)
- Valid word: misgust

18. hold:
- Prefix: un- (un-hold)
- Valid word: unhold

#### Row 7:
19. place:
- Prefix: re- (re-place)
- Valid word: replace

20. usual:
- Prefix: un- (un-usual)
- Valid word: unusual

21. portant:
- Prefix: im- (im-portant)
- Valid word: important

#### Row 8:
22. draw:
- Prefix: re- (re-draw)
- Valid word: redraw

23. logical:
- Prefix: il- (il-logical)
- Valid word: illogical

24. trieve:
- Prefix: re- (re-trieve)
- Valid word: retrieve

#### Row 9:
25. visible:
- Prefix: in- (in-visible)
- Valid word: invisible

26. play:
- Prefix: re- (re-play)
- Valid word: replay

27. cellent:
- Prefix: ex- (ex-cellent)
- Valid word: excellent

#### Row 10:
28. view:
- Prefix: re- (re-view)
- Valid word: review

29. code:
- Prefix: en- (en-code)
- Valid word: encode

30. flex:
- Prefix: over- (over-flex)
- Valid word: overflex

---

Final Answer:

Here is the completed table with the prefixes filled in:

| Prefix | Word | Result |
|--------|------------|-------------|
| re- | fix | refix |
| mis- | sense | mis-sense |
| un- | happy | unhappy |
| pre- | mind | pre-mind |
| im- | pert | impertinent |
| dis- | respect | disrespect |
| une- | equal | unequal |
| il- | legal | illegal |
| non- | fiction | non-fiction |
| re- | prove | reprove |
| pre- | frost | prefrost |
| pro- | ceed | proceed |
| un- | lucky | unlucky |
| mis- | lead | mislead |
| over- | fat | overfat |
| un- | fair | unfair |
| mis- | gust | misgust |
| un- | hold | unhold |
| re- | place | replace |
| un- | usual | unusual |
| im- | portant | important |
| re- | draw | redraw |
| il- | logical | illogical |
| re- | trieve | retrieve |
| in- | visible | invisible |
| re- | play | replay |
| ex- | cellent | excellent |
| re- | view | review |
| en- | code | encode |
| over- | flex | overflex |

Final Answer:
\boxed{
\begin{array}{|c|c|c|}
\hline
\text{refix} & \text{mis-sense} & \text{unhappy} \\
\hline
\text{pre-mind} & \text{impertinent} & \text{disrespect} \\
\hline
\text{unequal} & \text{illegal} & \text{non-fiction} \\
\hline
\text{reprove} & \text{prefrost} & \text{proceed} \\
\hline
\text{unlucky} & \text{mislead} & \text{overfat} \\
\hline
\text{unfair} & \text{misgust} & \text{unhold} \\
\hline
\text{replace} & \text{unusual} & \text{important} \\
\hline
\text{redraw} & \text{illogical} & \text{retrieve} \\
\hline
\text{invisible} & \text{replay} & \text{excellent} \\
\hline
\text{review} & \text{encode} & \text{overflex} \\
\hline
\end{array}
}