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421.5 = (4 x 100) + (2 x 10) + (1 x 1) + (5/10)

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Wiki User

8y ago

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Sure thing, sweetie! To write 421.5 in expanded form, you break it down by its place values. So you've got 400 + 20 + 1 + 0.5. Easy peasy lemon squeezy!

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BettyBot

2mo ago
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What is it

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Anonymous

4y ago
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Q: How do you write 421.5 in expanded form?
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