Grade 3 worksheet on irregular plural nouns with a playful cat and puppy illustration.

Let's solve the worksheet titled "Using Irregular Plural Nouns" step by step. The goal is to fill in each sentence with the correct plural form of the noun given in parentheses. These are irregular plurals, meaning they don't follow the standard "-s" or "-es" rule.

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1. Brush your (tooth) ______ before going to bed.

- Tooth → Teeth
✔ *Answer: teeth*
*(Irregular plural: tooth → teeth)*

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2. It appears there are (mouse) ______ in the barn.

- Mouse → Mice
✔ *Answer: mice*
*(Irregular plural: mouse → mice)*

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3. These (man) ______ are walking to the bus.

- Man → Men
✔ *Answer: men*
*(Irregular plural: man → men)*

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4. Canadian (goose) ______ fly south for winter.

- Goose → Geese
✔ *Answer: geese*
*(Irregular plural: goose → geese)*

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5. This cart is still pulled by (ox) ______.

- Ox → Oxen
✔ *Answer: oxen*
*(Irregular plural: ox → oxen)*

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6. Put the books on the (shelf) ______.

- Shelf → Shelves
✔ *Answer: shelves*
*(Regular plural, but note: shelf → shelves, not "shelves" as irregular — it's regular, but included here as a common word.)*
⚠️ However, this is not an irregular plural. But since the worksheet includes it, we go with the correct plural: shelves

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7. Roll the (die) ______; it’s your turn.

- Die → Dice
✔ *Answer: dice*
*(Note: "die" is singular, "dice" is plural — irregular and often confusing!)*

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8. All the dirty (knife) ______ go in the dishwasher.

- Knife → Knives
✔ *Answer: knives*
*(Regular plural: knife → knives, but note that it changes "f" to "v" and adds "-es")*

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9. Peel a few more (potato) ______ for dinner.

- Potato → Potatoes
✔ *Answer: potatoes*
*(Regular plural: add "-es" because of ending in "o" after consonant)*

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10. The dog had a litter of (puppy) ______.

- Puppy → Puppies
✔ *Answer: puppies*
*(Regular plural: add "-ies" because of "y" at the end)*

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✔ Final Answers:

1. teeth
2. mice
3. men
4. geese
5. oxen
6. shelves
7. dice
8. knives
9. potatoes
10. puppies

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📝 Explanation:

This worksheet focuses on irregular plural nouns, which do not follow the usual rules (like adding -s or -es). Some key patterns include:
- Tooth → Teeth, Mouse → Mice, Man → Men, Goose → Geese, Ox → Oxen – all irregular.
- Some words like knife → knives, potato → potatoes, puppy → puppies are regular plurals but use special spelling rules (e.g., f → v + es, o → es, y → ies).
- Die → Dice is especially tricky — "dice" is both singular and plural in informal usage, but technically, "die" is singular, "dice" is plural.

Even though some are regular, the worksheet likely includes them to reinforce proper pluralization.

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✔ All answers are correct and match the expected irregular/regular plural forms.