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To write forty-five hundredths, you would express it as the decimal number 0.45. In this decimal representation, the digit "4" is in the tenths place, representing four-tenths, and the digit "5" is in the hundredths place, representing five-hundredths. This is a standard way to represent fractions as decimal numbers.
To write seventy-four hundredths, you would use the decimal form 0.74. This represents 74 parts out of 100, which is equivalent to the fraction 74/100. In decimal form, each place value after the decimal point represents a power of 10, so the digit 7 is in the tenths place and the digit 4 is in the hundredths place.
1/10
Nineteen hundredths, in fraction form is 19/100. Then, you look at the 100- how many place values (look at its zeros) does it have? Since it has two, try to fit 19 two places behind the decimal point, since fractions are all numbers less than 1 (excluding mixed numbers). Good- 19 fits perfectly two places behind the decimal. What you have now is your answer. 19/100 in decimal form is 0.19.
4,027,000.45 =4.02700045x10^6 or, if it was that many hundredths- 40,270.0045 =4.02700045x10^4