Let’s go through each sentence one by one and figure out the correct prefix to complete the word. We’re looking for prefixes that make sense with the base word to fit the meaning of the sentence.
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1. Mom had to ______ heat the oven to 350° to bake the cake.
→ “Heat” is the base word. What do you do before baking? You heat it *again* or *beforehand*. The prefix “re-” means again. So:
reheat → makes sense!
✔ Answer:
re
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2. To help keep the Earth clean, we cycle all of or plastic.
Wait — this sentence seems off. It says “cycle all of or plastic.” That doesn’t sound right. Probably a typo. Likely meant: “we recycle all of our plastic.”
“Recycle” = re + cycle → to cycle again.
✔ Answer:
re (to make “recycle”)
*(Note: The sentence should probably say “we recycle all of our plastic.” But based on context, “re” is the only logical prefix here.)*
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3. I looked over my writing and found a ______ spelled word.
You found a word that was spelled wrong. So: “mis-spelled” → “mis-” means wrongly.
✔ Answer:
mis
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4. Before you take off your shoes, you need to tie them.
This sentence is backwards! If you’re taking off your shoes, you don’t tie them — you untie them!
So: “untie” → “un-” means reverse or remove.
✔ Answer:
un
*(The sentence likely meant: “Before you take off your shoes, you need to untie them.”)*
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5. You may be correct, but I ______ agree with you.
You’re saying you don’t agree. So: “disagree” → “dis-” means not or opposite.
✔ Answer:
dis
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6. We checked the ______ cast before we planned the event.
What kind of cast? Maybe “forecast”? Like weather forecast? Or “broadcast”? But “checked the forecast” makes sense if planning an outdoor event.
“Fore-” means before. Forecast = prediction before it happens.
✔ Answer:
fore
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7. The big, gray ______ marine plunged down into the water.
“Marine” relates to sea. What animal is big, gray, and lives in the sea? A submarine? No — that’s man-made. Wait — maybe “submarine”? But that doesn’t fit “plunged down into the water” as an animal.
Actually — “submarine” can mean under the sea. But the sentence says “the big, gray ___ marine” — so maybe it’s “submarine” as in the vessel? But then it wouldn’t “plunge” like an animal.
Wait — perhaps it’s “submarine” as in underwater vehicle? Still odd.
Alternative: Could it be “submarine” as in “undersea”? But no common animal fits.
Hold on — maybe it’s “submarine” and the sentence is describing a sub diving? Possible.
But let’s think: “sub-” means under. Submarine = under the sea.
✔ Answer:
sub
*(Even though it’s a bit awkward, “submarine” is the only word that fits grammatically and logically with “marine”.)*
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8. If you want to be ready for something, you need to ______ pare.
“Pare” means to trim or cut. But “prepare” means to get ready!
“Pre-” means before. Prepare = get ready before.
✔ Answer:
pre
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9. Make sure you ______ turn the library book on time!
You need to return the book. “Return” = re + turn → turn back.
✔ Answer:
re
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10. I try to be careful but sometimes I make a ______ take.
“Take” — what could go before it? “Mistake”! “Mis-” means wrong. Mistake = wrong take (as in action).
✔ Answer:
mis
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Now let’s list all answers clearly:
1. re
2. re
3. mis
4. un
5. dis
6. fore
7. sub
8. pre
9. re
10. mis
Final Answer:
1. re
2. re
3. mis
4. un
5. dis
6. fore
7. sub
8. pre
9. re
10. mis
Parent Tip: Review the logic above to help your child master the concept of prefix and suffix worksheet 5th grade.
