How do you write 1.73 in expanded form?

To write 1.73 in expanded form, you would break down the number into its different place values. In this case, 1 is in the ones place, 7 is in the tenths place, and 3 is in the hundredths place. So, 1.73 in expanded form would be written as 1 + 7/10 + 3/100.