Match prefixes like "un," "re," and "pre" with root words such as "known," "heat," and "do" to create new words.

Let's solve this step by step.

We are given a list of prefixes and root words, and we need to match each prefix with the correct root word to form a meaningful new word. Then, write the combined word in the box below.

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Step 1: Understand the prefixes and their meanings

- un- = not (e.g., unhappy)
- re- = again (e.g., rewrite)
- pre- = before (e.g., preview)
- mis- = wrong or badly (e.g., mispronounce)
- dis- = not or opposite (e.g., disagree)
- im- = not (used before words starting with 'p', 'l', 'm') (e.g., impossible)
- in- = not (used before words starting with 'h', 'o', 's') (e.g., incomplete)

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Step 2: Match prefixes with root words

Now let’s go through each prefix and find the most logical root word:

1. un- → known → unknown
(means "not known")

2. re- → heat → reheat
(means "to heat again")

3. pre- → do → predo? Not a common word. Wait — pre + do = pre-do? That's not valid.

Wait — perhaps it's pre + grown? No, that doesn’t work.

Let’s look at all roots:
- known
- heat
- do
- pronounce
- perfect
- grown
- honest

Try matching:

1. un- + known = unknown ✔
2. re- + heat = reheat ✔
3. pre- + do = pre-do ✘ (Not a real word)
But pre- + perfect = preperfect? No.
What about pre- + do? Hmm.

Wait — maybe pre- goes with do as in pre-do? Not common.

But actually, pre- + do isn't standard. Let’s try other combinations.

What is mis- + pronounce = mispronounce ✔
That’s a real word.

So:

4. mis- + pronounce = mispronounce

5. dis- + honest = dishonest ✔
6. im- + perfect = imperfect ✔
7. in- + grown = ingrown ✔
(Yes, "ingrown" is a real word — like ingrown toenail)

Now back to:

3. pre- + ? → Only do left?

Wait — pre- + do = pre-do? Not a word.

But pre- + do might be intended as pre-determine? No, not here.

Wait — what if pre- goes with do? Maybe not.

Let’s check which root words are used:

Roots: known, heat, do, pronounce, perfect, grown, honest

Used so far:

- unknown → un + known ✔
- reheat → re + heat ✔
- mispronounce → mis + pronounce ✔
- dishonest → dis + honest ✔
- imperfect → im + perfect ✔
- ingrown → in + grown ✔

Only one left: do

And only one prefix left: pre-

So: pre- + do = pre-do? That's not a word.

Wait — is there a word pre-do? No.

But perhaps it's pre- + do meaning "to do beforehand"? But no such word.

Wait — maybe the intended answer is redo? But that's re- + do, not pre- + do.

But re- is already matched with heat → reheat

So re- can’t go with do unless we change our earlier assumption.

Let’s reconsider.

Could re- go with do → redo? Yes! That’s a real word.

Then re- + do = redo

But then re- + heat = reheat — also valid.

But we can’t use both.

So which one is better?

Let’s see:

- re- + do = redo ✔
- re- + heat = reheat ✔

Both are valid.

But we have only one re- and one do and one heat.

So we must pick one.

Now look at pre- — is there a word pre- + do? No.

But pre- + do isn't a word.

Wait — pre- + perfect = preperfect? No.

pre- + grown = pregrown? Not common.

But pre- + do — still not good.

Wait — could pre- go with do? Unlikely.

Wait — maybe pre- + do is not intended.

Let’s try another possibility.

What about pre- + do? Not valid.

But pre- + do isn’t right.

Wait — perhaps the word is pre- + do → pre-do? Not a word.

Alternatively, maybe pre- + do is not correct.

But we have:

Prefixes: un, re, pre, mis, dis, im, in

Roots: known, heat, do, pronounce, perfect, grown, honest

Let’s try pairing based on real words:

1. un- + known = unknown ✔
2. re- + do = redo ✔
3. pre- + do? No
Or pre- + heat? Preheat? Yes! preheat ✔

Ah! pre- + heat = preheat

But re- + heat = reheat

So now we have two possibilities:

- preheat: pre + heat
- reheat: re + heat

But we can’t use heat twice.

So only one can be used.

So which one is better?

Let’s look at pre- — does it go with do? No.

But pre- + do is not a word.

But pre- + heat = preheat ✔

And re- + do = redo ✔

And mis- + pronounce = mispronounce ✔

dis- + honest = dishonest ✔

im- + perfect = imperfect ✔

in- + grown = ingrown ✔

Now only un- is left — and known is left.

So:

1. un- + known = unknown ✔

So now assign:

1. un → known → unknown
2. re → do → redo
3. pre → heat → preheat
4. mis → pronounce → mispronounce
5. dis → honest → dishonest
6. im → perfect → imperfect
7. in → grown → ingrown

Wait — but re- is paired with do, and pre- with heat

But re- + heat = reheat is also valid, but we’re using heat with pre-

But we can only use each root once.

So we need to decide which pairings make sense.

Let’s check all possible valid combinations:

- un- + known → unknown ✔
- re- + do → redo ✔
- re- + heat → reheat ✔
- pre- + heat → preheat ✔
- pre- + do → pre-do ✘
- mis- + pronounce → mispronounce ✔
- dis- + honest → dishonest ✔
- im- + perfect → imperfect ✔
- in- + grown → ingrown ✔
- in- + honest → inhonest? No — dishonest is correct, not inhonest

So dis- + honest = dishonest

in- + honest = inhonest? Not a word.

So in- must go with grown → ingrown

im- with perfect → imperfect

mis- with pronounce → mispronounce

un- with known → unknown

Now re- and pre- are left with do and heat

Possible:

- re- + do = redo
- pre- + heat = preheat

OR

- re- + heat = reheat
- pre- + do = pre-do? Not a word.

So only pre- + heat = preheat is valid for pre-

And re- + do = redo is valid

So we must assign:

- pre- → heat → preheat
- re- → do → redo

But wait — re- + do = redo — yes

pre- + heat = preheat — yes

Now check: all roots used?

Roots: known, heat, do, pronounce, perfect, grown, honest

Used:

- known → un- → unknown
- heat → pre- → preheat
- do → re- → redo
- pronounce → mis- → mispronounce
- perfect → im- → imperfect
- grown → in- → ingrown
- honest → dis- → dishonest

All roots used once.

All prefixes used.

All words are real.

So final matches:

1. un → known → unknown
2. re → do → redo
3. pre → heat → preheat
4. mis → pronounce → mispronounce
5. dis → honest → dishonest
6. im → perfect → imperfect
7. in → grown → ingrown

Now fill in the boxes:

```
1. unknown
2. redo
3. preheat
4. mispronounce
5. dishonest
6. imperfect
7. ingrown
```

But wait — the order in the worksheet is:

1. un - known → unknown
2. re - do → redo
3. pre - heat → preheat
4. mis - pronounce → mispronounce
5. dis - honest → dishonest
6. im - perfect → imperfect
7. in - grown → ingrown

Yes.

So the answers are:

1. unknown
2. redo
3. preheat
4. mispronounce
5. dishonest
6. imperfect
7. ingrown

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Final Answer:

Box Answers:

1. unknown
2. redo
3. preheat
4. mispronounce
5. dishonest
6. imperfect
7. ingrown

✔ All words are valid and correctly formed.