Understanding the Prefix 'Un-'
A Grade 5 ELA worksheet focusing on the prefix 'un-', its meaning, and how it changes the meaning of base words.
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Understanding the Prefix 'Un-'
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Read each section carefully and answer all questions. This worksheet will help you understand and use the prefix 'un-'.
What is a Prefix?
A prefix is a group of letters added to the beginning of a word to change its meaning. The prefix 'un-' is one of the most common prefixes in the English language. It usually means 'not' or 'opposite of'.
For example:
- happy + un- = unhappy (not happy)
- lock + un- = unlock (opposite of lock)
Complete each sentence by adding the prefix 'un-' to the word in parentheses.
1. The package arrived because it was dropped. (damaged)
2. It was for him to finish all his homework in one hour. (possible)
3. She felt after hearing the sad news. (comfortable)
4. Please your shoelaces before you trip. (tie)
5. The secret agent was to be seen. (likely)
Choose the best meaning for the word with the prefix 'un-'.
1. What does 'unwise' mean?
very wise
not wise
partially wise
always wise
2. If something is 'unbreakable', it means it is:
easy to break
unable to be broken
broken already
broken accidentally
1. Explain in your own words how the prefix 'un-' changes the meaning of a base word. Provide an example.
Read each statement and circle True or False.
1. The word 'unhappy' means 'very happy'.
True
False
2. Adding 'un-' to a word always makes it mean the opposite.
True
False
Use the words from the word bank to complete the sentences below. Add the prefix 'un-' to each word before using it.
1. It was very of the bully to take her lunch money.
2. The knot was so tight, I couldn't it.
3. Please the clothes from the laundry basket.
4. Playing near the busy road is .