Final answer:
Option A. 1/10 of the ones place is known as the tenths place, which corresponds to option A. Each place to the right of the decimal in our place value system is ten times less than the one to its left.
Step-by-step explanation:
The place value that is 1/10 of the ones place is known as the tenths place. In our decimal numbering system, the place values are determined relative to the decimal point. To the left of the decimal point, each place value is ten times greater than the one to its right: ones, tens, hundreds, etc. To the right of the decimal point, each place value is ten times less than the one to its left: tenths, hundredths, thousandths, etc.
For example, in the number 231.45, the 4 is in the tenths position, meaning it represents four tenths, and the 5 is in the hundredths position, representing five hundredths.
So, if we're looking at the ones place and want to determine what 1/10 of that value would be, we would be looking at the tenths place, which is option A.