What is the decimal value of 0.45 expressed in words?

• A. Forty-five hundredths
• B. Four hundred fifty thousandths
• C. Four point five
• D. Forty-five thousandths

Answer: (A)

The decimal value of 0.45 can be expressed in words as "forty-five hundredths." This is because the number 0.45 consists of two digits after the decimal point. The first digit, 4, refers to the tenths place, and the second digit, 5, refers to the hundredths place. Therefore, together they equal forty-five hundredths.

When we analyze the other options, they represent different interpretations of decimal numbers. "Four hundred fifty thousandths" would correspond to the decimal 0.450, which is different from 0.45, though they are numerically equivalent. "Four point five" suggests the decimal value of 4.5, which is far greater than 0.45. Lastly, "forty-five thousandths" would correspond to the decimal 0.045, not the intended 0.45. Hence, "forty-five hundredths" accurately captures the correct representation of the decimal value.