Final answer:
The answer to 2.5 × 30 is 75, and when expressed as tenths, it is 25 tenths × 30, which equals 750 tenths. Both represent the same numerical value but in different forms.
Step-by-step explanation:
The student's question relates to basic multiplication and understanding decimal places in the context of mathematics. To answer the student's question, we perform the calculation 2.5 × 30, which equals 75. When the problem is presented in terms of tenths, it translates to 25 tenths × 30, since 2.5 can be expressed as 25 tenths. Multiplying 25 tenths by 30, we get the same result: 750 tenths, which is equivalent to 75 in whole numbers. This exercise is important for students to understand decimal place values and their equivalents as fractions (tenths, hundredths, etc.).