Oh, dude, it's like you take the number 400, add 8 to it, and boom, you've got 408 in expanded form. So, 400 + 8 = 408. It's like breaking down the number into its parts, but who really has time for that, am I right?
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Expanded Notation of 408 = (4 x 100) + (0 x 10) + (8 x 1).
In expanded form 5.68 is 5 + 0.6 + 0.08
100+50
It is 80000000 + 3000000.
In expanded notation you would write the number 42,166,037 as: 40,000,000 + 2,000,000 + 100,000 + 60,000 + 6,000 + 30 + 7.