3rd grade
posted by grandma .
when this 3digit number is rounded to the nearest ten, the sum of its digits is 16 .the hundreds digit of this number is 8 and the ones digit is 5 . what is the number?

if the one is 5 and the hundreds is 8, then it is 5._8, and 5 + 8 + _ = 16, so you subtract 5+8 from 16 and get 3, so the number is 5.38

8 __ 5
Rounded to the nearest ten, it's 8 __ 0
8 + 0 + x = 16
x must be 8.
880 = 8 + 8 + 0 = 16 
Cody  I don't think you read the problem correctly.
Did you forget to round the number to the nearest 10? 
_ fail. i just failed a 3rd grade math problem and i live at the illinois math and science academy. that is just sad

We all make mistakes, Cody. One of the most intelligent math and physics teachers I know recently told me that he can't add a column of numbers.

Use the digits. 3,7,1,5 to write a number that rounds to each of the following