Final answer:
The number described by 1 ten and 16 ones is 26, obtained by adding the value of ten, which is 10, to the sixteen ones.
Step-by-step explanation:
The student asked to write the number described by 1 ten and 16 ones. In our place value system, which is based on powers of ten, each place to the left is ten times greater than the place to the right of it. Therefore, we first have to recognize that the number described as '1 ten 16 ones' indicates that we have one ten (which is 10) and sixteen ones (which is 16). When these are combined, we get the total by adding the two parts: 10 (from the 'ten') + 16 (from the 'ones').
So, the number described by '1 ten 16 ones' is simply 10 + 16 = 26.