Final answer:
To express 8 in tenths, you fill in the blank with '80', and to express 8 in hundredths, you fill in the blank with '800'.
Step-by-step explanation:
The student's question asks to fill in the blanks with equivalent decimal representations for tenths and hundredths. For the statement '8 = ____ tenths', the blank would be filled with '80' because 8 is equal to 80 tenths (since 1 whole equals 10 tenths). Similarly, for '8 = ____ hundredths', the blank would be filled with '800' because 8 is equal to 800 hundredths (since 1 whole equals 100 hundredths).