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PLURAL NOUNS - RULES - Math Worksheets 4 Kids

4. To make the plurals of nouns ending in a -y and the letter before the -y is a vowel, add an -s. 5. To make plurals of nouns ending in the letter -f or -fe, change f and fe to v and add an -es. There are a few exceptions to this rule. The nouns ending in a -ff take an -s in the plural form. 6. To make plurals of nouns ending in the letter -o ...