SOLUTION: Grade 3 grammar worksheets prefix suffix 08 - Studypool - Free Printable

Problem Explanation:

The task involves adding prefixes or suffixes to the root words provided in parentheses to complete each sentence. Prefixes are added at the beginning of a word, while suffixes are added at the end. The goal is to form meaningful words that fit the context of each sentence.

Solution:

#### 1. He worked to be a _______ (physic).
- Root word: physic
- Context: The sentence suggests a profession related to physics.
- Solution: physicist (adding the suffix -ist)
- Complete sentence: He worked to be a physicist.

#### 2. I wish I had _______ (packed) the map before putting in the cupcakes.
- Root word: packed
- Context: The sentence implies a past action that was not done.
- Solution: unpacked (adding the prefix un-)
- Complete sentence: I wish I had unpacked the map before putting in the cupcakes.

#### 3. The toddler was being _______ (back) when he hid behind his mother's leg.
- Root word: back
- Context: The sentence describes a behavior, likely related to being stubborn or resistant.
- Solution: backward (adding the suffix -ward)
- Complete sentence: The toddler was being backward when he hid behind his mother's leg.

#### 4. It takes _______ (thought) to plan for retirement.
- Root word: thought
- Context: The sentence suggests a deep or careful consideration.
- Solution: forethought (adding the prefix fore-)
- Complete sentence: It takes forethought to plan for retirement.

#### 5. It is pretty _______ (hard) to jump off the monkey bars.
- Root word: hard
- Context: The sentence describes difficulty.
- Solution: difficult (adding the prefix dif- and suffix -ult)
- Complete sentence: It is pretty difficult to jump off the monkey bars.

#### 6. I dipped _______ (actor) when I was swimming across the river.
- Root word: actor
- Context: The sentence implies a temporary state of being submerged.
- Solution: acting (adding the suffix -ing)
- Complete sentence: I dipped acting when I was swimming across the river.

#### 7. Please _______ (build) the toy for your sister.
- Root word: build
- Context: The sentence is a request for an action.
- Solution: build (no change needed; it is already a verb)
- Complete sentence: Please build the toy for your sister.

Final Answers:

1. physicist
2. unpacked
3. backward
4. forethought
5. difficult
6. acting
7. build

Boxed Final Answer:

\[
\boxed{\text{physicist, unpacked, backward, forethought, difficult, acting, build}}
\]