It is 3000000000 + 700000000 + 6000000 + 200000 + 40000 + 800 + 90 + 9.
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To write 2.9 in expanded form, you would express it as 2 + 0.9. In word form, 2.9 would be written as "two and nine tenths."
4x10440000
Sure thing, honey! To write 2.2 in expanded form, you'd break it down like this: 2 + 0.2. So, in a more expanded way, it would be 2 + (2/10). Voilà!
2.07
4 + 0.5