Question

what is the word form of the number shown? 3.15 three and fifteen tenths three hundred fifteen three and fifteen hundredths three and fifteen

Explanation:

The number 3.15 has a whole number part "3" (word form "three") and a decimal part "15". The decimal place after the decimal point is the hundredths place (since 15 is two digits after the decimal, corresponding to $\frac{15}{100}$). So the word form is "three and fifteen hundredths". Other options are incorrect: "three and fifteen tenths" refers to 3.15 being 3 + 15/10 = 4.5, "three hundred fifteen" is 315, and "three and fifteen" is not a valid decimal word form.

Answer:

three and fifteen hundredths