Prefixes and suffixes - Free Printable
Educational worksheet: Prefixes and suffixes. Download and print for classroom or home learning activities.
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Step-by-step solution for: Prefixes and suffixes
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Show Answer Key & Explanations
Step-by-step solution for: Prefixes and suffixes
Let's solve each sentence by adding the correct prefix or suffix to the word in brackets, using the given options:
---
- DIS-, UN-, IM-, RE-
- -ING, -ED, -ANCE, -FUL, -ABLE, -LY, -OUS, -ER
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Now, let’s go through each sentence one by one.
---
1. I can't answer this question. It's ............... (POSSIBLE).
→ "Can't answer" means it's not possible.
→ Use UN- prefix → impossible
✔ Answer: impossible
---
2. Don't stand near the water. It's too ............... (DANGER).
→ We need an adjective meaning "dangerous".
→ Add suffix -OUS → dangerous
✔ Answer: dangerous
---
3. I don't like this fish. It's not very well ............... (COOK).
→ Need a past participle to describe the state of the fish.
→ Add -ED → cooked
✔ Answer: cooked
---
4. Kate started crying because she was so ............... (HAPPY)
→ She is sad, so opposite of happy → use UN- → unhappy
✔ Answer: unhappy
---
5. If you have a haircut it will change your ............... (APPEAR)
→ Need a noun form of "appear" → add -ANCE → appearance
✔ Answer: appearance
---
6. Paul never waits in queues. He is too ............... (PATIENT)
→ He doesn't wait → he is impatient → use IM-
✔ Answer: impatient
---
7. Thank you for your advice. You have been very ............... (HELP)
→ Need an adjective meaning helpful → add -FUL → helpful
✔ Answer: helpful
---
8. Stealing other people's money is ............... (HONEST)
→ Stealing is dishonest → use DIS- → dishonest
✔ Answer: dishonest
---
9. Our science ............... is very young. (TEACH)
→ Need a noun meaning "teacher" → add -ER → teacher
✔ Answer: teacher
---
10. Harry didn't think the book was very ............... (INTEREST).
→ Need an adjective meaning "interesting" → add -ING → interesting
✔ Answer: interesting
---
11. A million pounds was given to the hospital by an ............... person (KNOWN)
→ Unknown person → use UN- → unknown
✔ Answer: unknown
---
12. When you ............... this paragraph, make it a bit shorter (WRITE)
→ To shorten writing → use RE- → rewrite
✔ Answer: rewrite
---
13. Mary was wearing a/an ............... hat (USUAL)
→ Not usual → unusual → use UN- → unusual
✔ Answer: unusual
---
14. That was a great film. It was really ............... (ENJOY)
→ Need an adjective meaning enjoyable → add -ABLE → enjoyable
✔ Answer: enjoyable
---
15. I like this town. The people are very ............... (FRIEND)
→ Need an adjective meaning friendly → add -LY → friendly
✔ Answer: friendly
---
16. I don't think you're right. I ............... with you completely (AGREE)
→ Opposite of agree → disagree → use DIS-
✔ Answer: disagree
---
1. impossible
2. dangerous
3. cooked
4. unhappy
5. appearance
6. impatient
7. helpful
8. dishonest
9. teacher
10. interesting
11. unknown
12. rewrite
13. unusual
14. enjoyable
15. friendly
16. disagree
---
- Prefixes change meaning (e.g., *un-* = not, *dis-* = opposite, *im-* = not, *re-* = again).
- Suffixes change part of speech:
- -ing: present participle or adjective
- -ed: past tense or past participle
- -ance: noun from verb
- -ful: adjective (full of)
- -able: adjective (capable of)
- -ly: adverb or adjective (often from adjectives)
- -ous: adjective (full of)
- -er: noun (person who does something)
Each answer uses a logical transformation based on grammar and context.
Let me know if you'd like this as a printable worksheet!
---
Prefixes:
- DIS-, UN-, IM-, RE-
Suffixes:
- -ING, -ED, -ANCE, -FUL, -ABLE, -LY, -OUS, -ER
---
Now, let’s go through each sentence one by one.
---
1. I can't answer this question. It's ............... (POSSIBLE).
→ "Can't answer" means it's not possible.
→ Use UN- prefix → impossible
✔ Answer: impossible
---
2. Don't stand near the water. It's too ............... (DANGER).
→ We need an adjective meaning "dangerous".
→ Add suffix -OUS → dangerous
✔ Answer: dangerous
---
3. I don't like this fish. It's not very well ............... (COOK).
→ Need a past participle to describe the state of the fish.
→ Add -ED → cooked
✔ Answer: cooked
---
4. Kate started crying because she was so ............... (HAPPY)
→ She is sad, so opposite of happy → use UN- → unhappy
✔ Answer: unhappy
---
5. If you have a haircut it will change your ............... (APPEAR)
→ Need a noun form of "appear" → add -ANCE → appearance
✔ Answer: appearance
---
6. Paul never waits in queues. He is too ............... (PATIENT)
→ He doesn't wait → he is impatient → use IM-
✔ Answer: impatient
---
7. Thank you for your advice. You have been very ............... (HELP)
→ Need an adjective meaning helpful → add -FUL → helpful
✔ Answer: helpful
---
8. Stealing other people's money is ............... (HONEST)
→ Stealing is dishonest → use DIS- → dishonest
✔ Answer: dishonest
---
9. Our science ............... is very young. (TEACH)
→ Need a noun meaning "teacher" → add -ER → teacher
✔ Answer: teacher
---
10. Harry didn't think the book was very ............... (INTEREST).
→ Need an adjective meaning "interesting" → add -ING → interesting
✔ Answer: interesting
---
11. A million pounds was given to the hospital by an ............... person (KNOWN)
→ Unknown person → use UN- → unknown
✔ Answer: unknown
---
12. When you ............... this paragraph, make it a bit shorter (WRITE)
→ To shorten writing → use RE- → rewrite
✔ Answer: rewrite
---
13. Mary was wearing a/an ............... hat (USUAL)
→ Not usual → unusual → use UN- → unusual
✔ Answer: unusual
---
14. That was a great film. It was really ............... (ENJOY)
→ Need an adjective meaning enjoyable → add -ABLE → enjoyable
✔ Answer: enjoyable
---
15. I like this town. The people are very ............... (FRIEND)
→ Need an adjective meaning friendly → add -LY → friendly
✔ Answer: friendly
---
16. I don't think you're right. I ............... with you completely (AGREE)
→ Opposite of agree → disagree → use DIS-
✔ Answer: disagree
---
✔ Final Answers:
1. impossible
2. dangerous
3. cooked
4. unhappy
5. appearance
6. impatient
7. helpful
8. dishonest
9. teacher
10. interesting
11. unknown
12. rewrite
13. unusual
14. enjoyable
15. friendly
16. disagree
---
🔍 Explanation Summary:
- Prefixes change meaning (e.g., *un-* = not, *dis-* = opposite, *im-* = not, *re-* = again).
- Suffixes change part of speech:
- -ing: present participle or adjective
- -ed: past tense or past participle
- -ance: noun from verb
- -ful: adjective (full of)
- -able: adjective (capable of)
- -ly: adverb or adjective (often from adjectives)
- -ous: adjective (full of)
- -er: noun (person who does something)
Each answer uses a logical transformation based on grammar and context.
Let me know if you'd like this as a printable worksheet!
Parent Tip: Review the logic above to help your child master the concept of suffix and prefix worksheet.
