What is 31,084.5 expanded notation

30000+1000+80+4+0.5

Step-by-step explanation:

Expanded notation can be defined as to rewrite the numbers to show their place values

For example in the given question 3 is at the tenth thousand place, 1 is at the thousand'th place, 8 at tenth and 4 at unit place so the solution for the question is given below:

30000+1000+80+4+0.5

3*10000+1*1000+8*10+4*1 + (5*1:10)