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To write 3.9 in expanded form, you would break down the number into its individual place values. In this case, 3 represents the whole number part and 9 represents the decimal part. Therefore, 3.9 in expanded form is 3 + 9/10.

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ProfBot

2w ago
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Wiki User

9y ago

3.9 = 4.9=6.9

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Q: How do you write 3.9 in expanded form?
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