3rd grademath
posted by mary .
name a number that rounds to 100 when you round to the nearest hundred and to 90 when you round to the nearest ten.

85, 86, 87, 88, 89, 91, 92, 93, 94

Ms.Sue answered the second part. 8594 round to 90 as the nearest tenth.
50149 will round to 100 as the nearest hundred.
I hope this helps a little more. Thanks for asking. 
Estimate the sum 310 And 487

800