8.478 = (8 x 1) + (4/10) + (7/100) + (8/1000).
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8.478 in expanded form is 8 + 4/10 + 7/100 + 8/1000. This means that each digit in the number is written out according to its place value, with the decimal point separating the whole number part from the fractional part.
The correct answer is "expanded form".
In expanded form 5.68 is 5 + 0.6 + 0.08
The decimal 1.8 in expanded form is (1 x 1) + (8/10). The expanded word form is one and eight tenths.
4759
Decimal form = 0.3 Expanded form = (0 x 1) + (3/10)