1. **State the problem:** We need to find in which two numbers the digit 7 has a value of 0.7. 2. **Understand place values:** The value of a digit depends on its position. For example, in decimal numbers: - The digit just after the decimal point is in the tenths place, so its value is digit \times 0.1. - The digit in the hundredths place is digit \times 0.01, and so on. 3. **Identify the digit 7 in each number and its place:** - 57.2: 7 is in the units place (value 7). - 23.71: 7 is in the tenths place (value 0.7). - 64.17: 7 is in the hundredths place (value 0.07). - 79.24: 7 is in the tens place (value 70). - 17.56: 7 is in the units place (value 7). - 14.78: 7 is in the tenths place (value 0.7). 4. **Select numbers where 7 has value 0.7:** These are 23.71 and 14.78. **Final answer:** The digit 7 has a value of 0.7 in the numbers 23.71 and 14.78.