500 x 10 = 5000
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It is 5000.
10 times 2/5
500.46
5/10 = 5 ÷ 10 = 0.5 = 5 × 10^-1
To write the number 305.5 in expanded form, you would break it down into its component parts based on its place value. 305 is composed of 3 hundreds (300), 0 tens, and 5 ones. The .5 represents 5 tenths. Therefore, in expanded form, 305.5 would be written as 300 + 0 + 5 + 5/10.