Question

Carson wants to divide 128 by 3.2. What is the place value of the first digit in his answer?
tenths
ones
tens
hundreds

Answer 1

To divide 128 by 3.2, we can first simplify the division by eliminating the decimal. We can do this by multiplying both the numerator and the denominator by 10:

\[
\frac{128}{3.2} = \frac{128 \times 10}{3.2 \times 10} = \frac{1280}{32}
\]

Now, we can perform the division:

\[
1280 \div 32 = 40
\]

Carson's answer is 40. The first digit in the answer is 4.

Now, we need to determine the place value of 4 in the number 40. The place values of the digits in 40 are:

- The digit 4 is in the tens place.
- The digit 0 is in the ones place.

Therefore, the place value of the first digit (4) in his answer is **tens**.